Question

x²+7x+10=0 equação segundo grau

Answer 1

x² + 7x + 10 = 0

a = 1, b = +7, c = 10

∆ = b² - 4.a.c

∆ = (7)² - 4.1.10

∆ = 49 - 40

∆ = 9

x = (- b ± √∆) / 2.a

x = (-7 ± √9) / 2.1

x = (-7 ± 3) / 2

x1 = (-7 + 3) / 2

x1 = -4 / 2 -> x1 = -2

x2 = (-7 - 3) / 2

x2 = -10 / 2 -> x2 = -5