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1,√x(√x+2)=+3 2,3xmũ4 -6xmũ2=0 3,xmũ3+4x+x-6=0 4, xmũ4 +2xmũ2 -x+1=15xmũ2 -x-35 GIÚP EM ĐI MÀ MẤY ANH CHỊ ĐẸP TRAI XINH GÁI MAI ĐẾN HẠN NỘP BÀI RỒI

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Phuong Vy

5 tháng trước

Đáp án:√x (√x+2)=3

⇔x+2√x=3

⇔2√x=3-x( bình phương 2 vế)

⇔4x=9-6x+x^2

⇔-x^2+10x-9=0

⇔x^2-10x+9=0

⇔x^2-x-9x+9=0

⇔x(x-1)-9(x-1)

⇔(x-1)-(x-9)=0

⇔x=1 ; x= 9 ( ktra nghiệm lại nha)

2. Đặt x2=t ta có :

3t^2-6t=0( ấn máy tính giải pt nha)

=> t=0 ; t= 2

Với t=0 ta có x=0

với t=2 ta có x=+-√2

3. x^3+5x-6=0 tách thành ntu chung

x=1

lười làm quáaa

Giải thích các bước giải:

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1,√x(√x+2)=+3 2,3xmũ4 -6xmũ2=0 3,xmũ3+4x+x-6=0 4, xmũ4 +2xmũ2 -x+1=15xmũ2 -x-35 GIÚP EM ĐI MÀ MẤY ANH CHỊ ĐẸP TRAI XINH GÁI MAI ĐẾN HẠN NỘP BÀI RỒI

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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.

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

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

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1,√x(√x+2)=+3 2,3xmũ4 -6xmũ2=0 3,xmũ3+4x+x-6=0 4, xmũ4 +2xmũ2 -x+1=15xmũ2 -x-35 GIÚP EM ĐI MÀ MẤY ANH CHỊ ĐẸP TRAI XINH GÁI MAI ĐẾN HẠN NỘP BÀI RỒI

1 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.

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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.