Đáp án: x²-4x-m²+3=0 Giải pt khi m=1 - Ta có x^2-4x-m^2+3=0 thay m=1 vào biểu thức x^2-4x-1^2+3=0 =>x^2-4x+2=0 x_(1, 2)=(-(-4)± √((-4)^2-4⋅ 1⋅ 2)/2⋅ 1) x_(1, 2)=(-(-4)± 2√(2)/2⋅ 1) x_1=(-(-4)+2√(2)/2⋅ 1), x_2=(-(-4)-2√(2)/2⋅ 1) x=2+√(2), x=2-√(2)

Ta có x^2-4x-m^2+3=0 thay m=1 vào biểu thức x^2-4x-1^2+3=0 =>x^2-4x+2=0 x_(1, 2)=(-(-4)± √((-4)^2-4⋅ 1⋅ 2)/2⋅ 1) x_(1, 2)=(-(-4)± 2√(2)/2⋅ 1) x_1=(-(-4)+2√(2)/2⋅ 1), x_2=(-(-4)-2√(2)/2⋅ 1) x=2+√(2), x=2-√(2)

Oni Rgine

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x²-4x-m²+3=0 Giải pt khi m=1

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Fanconananime

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Ta có : `x^2-4x-m^2+3=0`

thay m=1 vào biểu thức

`x^2-4x-1^2+3=0`

`=>x^2-4x+2=0`

$x_{1,\:2}=\frac{-\left(-4\right)\pm \sqrt{\left(-4\right)^2-4\cdot \:1\cdot \:2}}{2\cdot \:1}$

$x_{1,\:2}=\frac{-\left(-4\right)\pm \:2\sqrt{2}}{2\cdot \:1}$

$x_1=\frac{-\left(-4\right)+2\sqrt{2}}{2\cdot \:1},\:x_2=\frac{-\left(-4\right)-2\sqrt{2}}{2\cdot \:1}$

$x=2+\sqrt{2},\:x=2-\sqrt{2}$

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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.

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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.