Question

resolva a equação X² + 10x + 25 = 0

Answer 1

x² + 10x + 25 = 0

a = 1; b = 10; c = 25

x = [- b ± √(b² - 4ac)] / 2a
x = [- 10 ± √(10² - 4 . 1 . 25)] / 2 . 1
x = [- 10 ± √(100 - 100)] / 2
x = [- 10 ± √0] / 2
x = [- 10 ± 0] / 2
x' = [- 10 + 0] / 2 = -10 / 2 = -5
x'' = [- 10 - 0] / 2 = -10 / 2 = -5

S = {-5}

Espero ter ajudado. Valeu!

Answer 2

x^2+10x+25=0
falemos que (#)é delta
#=10^2-4×1×25
#=100-100
#=0

x=-10+-r0
2×1
x=-10+-0
2
x'=-10+0=-10=-5
2 2
x"=-10-0=-10=-5
2 2