Đáp án: Cho hay nhất x cthln Rút gọn các biểu thức sau A=4 √(x^(2)+1)-2 √(16(x^(2)+1))+5 √(25(x^(2)+1)) (; ) - Đáp án + Giải thích các bước giải A = 4√(x^2 + 1) - 2√(16(x^2 + 1)) + 5√(25(x^2 + 1)) A = 4√(x^2 + 1) - 2√(16) √(x^2 + 1) + 5√(25) √(x^2 + 1) A = 4√(x^2 + 1) - 2 4 √(x^2 + 1) + 5 5 √(x^2 + 1) A = 4√(x^2 + 1) - 8√(x^2 + 1) + 25√(x^2 + 1) A = (4 - 8 + 25)√(x^2 + 1)A = 21√(x^2 + 1)

Đáp án + Giải thích các bước giải A = 4√(x^2 + 1) - 2√(16(x^2 + 1)) + 5√(25(x^2 + 1)) A = 4√(x^2 + 1) - 2√(16) √(x^2 + 1) + 5√(25) √(x^2 + 1) A = 4√(x^2 + 1) - 2 4 √(x^2 + 1) + 5 5 √(x^2 + 1) A = 4√(x^2 + 1) - 8√(x^2 + 1) + 25√(x^2 + 1) A = (4 - 8 + 25)√(x^2 + 1)A = 21√(x^2 + 1)

#andy [(l)A = 4√ ((x^2) + 1) - 2√ (16( ((x^2) + 1) )) + 5√ (25( ((x^2) + 1) )) = 4√ ((x^2) + 1) - 24√ ((x^2) + 1) + 55√ ((x^2) + 1) = 4√ ((x^2) + 1) - 8√ ((x^2) + 1) + 25√ ((x^2) + 1) = ( (4 - 8 + 25) )√ ((x^2) + 1) = 21√ ((x^2) + 1) ]

legendaryst

4 tháng trước

Cho hay nhất x cthln Rút gọn các biểu thức sau: $A=4 \sqrt{x^{2}+1}-2 \sqrt{16\left(x^{2}+1\right)}+5 \sqrt{25\left(x^{2}+1\right)} \text {; }$

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Minh Hieu

4 tháng trước

Đáp án + Giải thích các bước giải:

$A = 4\sqrt{x^2 + 1} - 2\sqrt{16(x^2 + 1)} + 5\sqrt{25(x^2 + 1)}$

$A = 4\sqrt{x^2 + 1} - 2\sqrt{16} . \sqrt{x^2 + 1} + 5\sqrt{25} . \sqrt{x^2 + 1}$

$A = 4\sqrt{x^2 + 1} - 2 . 4 . \sqrt{x^2 + 1} + 5 . 5 . \sqrt{x^2 + 1}$

$A = 4\sqrt{x^2 + 1} - 8\sqrt{x^2 + 1} + 25\sqrt{x^2 + 1}$

$A = (4 - 8 + 25)\sqrt{x^2 + 1}$
$A = 21\sqrt{x^2 + 1}$

andybao2007

4 tháng trước

#andy

\[\begin{array}{l}
A = 4\sqrt {{x^2} + 1} - 2\sqrt {16\left( {{x^2} + 1} \right)} + 5\sqrt {25\left( {{x^2} + 1} \right)} \\
= 4\sqrt {{x^2} + 1} - 2.4\sqrt {{x^2} + 1} + 5.5\sqrt {{x^2} + 1} \\
= 4\sqrt {{x^2} + 1} - 8\sqrt {{x^2} + 1} + 25\sqrt {{x^2} + 1} \\
= \left( {4 - 8 + 25} \right)\sqrt {{x^2} + 1} \\
= 21\sqrt {{x^2} + 1}
\end{array}\]

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Cho hay nhất x cthln Rút gọn các biểu thức sau: $A=4 \sqrt{x^{2}+1}-2 \sqrt{16\left(x^{2}+1\right)}+5 \sqrt{25\left(x^{2}+1\right)} \text {; }$

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việt nam dành độc lập vào năm nào

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

Đề thi - đề kiểm tra Xem thêm

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Cho hay nhất x cthln Rút gọn các biểu thức sau: $A=4 \sqrt{x^{2}+1}-2 \sqrt{16\left(x^{2}+1\right)}+5 \sqrt{25\left(x^{2}+1\right)} \text {; }$

2 câu trả lời

Viết một đoạn văn hoàn chỉnh về lý do học tiếng Anh bằng cách đưa ra các manh mối ( ko chép mạng nhá)

việt nam dành độc lập vào năm nào

Choose the best answer.I think you should buy _____ pack of mineral water instead. And you can also buy _____ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______ cookies and soft candies.

Choose the best answer.We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.

Choose the best answer.I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

Đề thi - đề kiểm tra Xem thêm

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.