Question

Encontre o x¹ e o x²

a) 2x² -11x +5 = 0
b) 2x² +4x +4= 0
c) 4 - 5x² = 2x
d) x² - 11x + 28 = 0
e) 4x² + 2x +1 = 0
f) 2x² - 4x -1= 0
g) x²+8x +16 = 0

Answer 1

a) (2x -1)(x -5) = 0
x = 1/2, 5

d) (x -4)(x -7) = 0
x = 4, 7

g) (x +4)² = 0
x = -4