Question

( x + 5 ) . ( x + 2 )

Answer 1

x² + 2x + 5x + 10
x² + 7x +10
∆ = 7² - 4 . 1 . 10
∆ = 49 - 40
∆ = 9

X = - 7 ± √9 / 2.1

x¹ = - 7 + 3 / 2
x¹ = -4 / 2
x¹ = -2

x² = -7 - 3 / 2
x² = - 10 / 2
x² = - 5

(Espero ter ajudado!)