Question

2x² -7x =15 formula de baskara​

Answer 1

2x² - 7x = 15

2x² - 7x - 15 = 0

Δ = (-7)² - 4.2.(-15)

Δ = 49 + 120

Δ = 169

$x = \frac{-(-7) +-\sqrt{169} }{2.2}$

$x=\frac{7+-13}{4}$

$x=\frac{7-13}{4}$

$x= \frac{7+13}{4}$

$x'= -\frac{3}{2}$

$x"= 5$