Question

ESCREVA NA FORMA REDUZIDA:
a) x ∙ (x + 3) = 5x + 15
b) (x + 4)2 = 9x + 22
c) 2x ∙ (x – 3) – 6 = x ∙ (x – 1)
d) 8x2 – 10x = -4
e) – 6x – 8 = -3x2

Answer 1

A)x ² +3x=5x+15
x ² +3x-5x-15=0
x ² -2x-15=0

B)2x+8=9x+22
2x-9x+8-22=0
-7x-14=0

C)2x ² -6x=x ² -x
2x ² -x ² -6x+x=0
x ² -5x=0

D)8x ² -10x+4=0

E)-6x-8+3x ² =0