Question

Скороти дріб дуже легке, даю 35балів

Answer 1

Объяснение:

$\frac{2x^{2}+5x-7}{x^{2}-3x+2} = \frac{2(x-1)(x+3,5)}{(x-1)(x-2)} = \frac{2x+7}{x-2}$

2x² + 5x - 7 = 0

D = 25 - 4*2*(-7) =

= 25 + 56 = 81

√D = 9

x₁ = $\frac{-5+9}{4} = \frac{4}{4} = 1$

x₂ = $\frac{-5-9}{4} = \frac{-14}{4} = \frac{-7}{2} = -3,5$

x² - 3x + 2 = 0

x₁ = 2

x₂ = 1