Question

f(x)=x ao quadrado+7+10

Answer 1

f(x) = x² + 7x + 10
x² + 7x + 10 = 0

Δ= 7² - 4 . 1 . 10
Δ = 49 - 40
Δ = 9

x¹= $\frac{-7 + 3}{2} = -2$
x² = $\frac{-7-3}{2} = -5$
:)