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Sagot :
2x² + 2x = 4 - x
+ x + x
2x² + 3x = 4
2x² + 3x - 4 = 0
x = -(3) +/- √((3)² - 4(2)(-4))
2(2)
x = -3 +/- √(9 + 32)
4
x = -3 +/- √(41)
4
x = -3 +/- 6.4
4
x = -0.75 + 1.6
x = -0.75 + 1.6 x = -0.75 - 1.6
x = 0.85 x = -16.75
The answer is equal to D. x = -0.75 + √(41)/4 and x = -0.75 - √(41)/4.
+ x + x
2x² + 3x = 4
2x² + 3x - 4 = 0
x = -(3) +/- √((3)² - 4(2)(-4))
2(2)
x = -3 +/- √(9 + 32)
4
x = -3 +/- √(41)
4
x = -3 +/- 6.4
4
x = -0.75 + 1.6
x = -0.75 + 1.6 x = -0.75 - 1.6
x = 0.85 x = -16.75
The answer is equal to D. x = -0.75 + √(41)/4 and x = -0.75 - √(41)/4.
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