Question

Determine a, b e c em cada item:

a) (x – 6)(x + 5) + x =

b) (x2 + 3x)(x – 12) = 0

c) (x – 3)2 = 5x + 9

d) 5x(x + 1) + (x – 4)2 = 16 + 3x​

Answer 1

a) x2 - 25 +x = 0
x2 + x = 25
2x2 = 25
2x = raiz 25
2x = 5
x = 5/2
x = 2,5

c