Question

a)-2 AB + 5B - 4 AB -7 AB + 2 B - 10 AB + 2B

b)2x + 10 = x+15

c) 4x=36

d) 12 - 5x = -15x + 52

e) 8x -7= -17 + 2x

Resolva as no conjunto R:

a) 4x2 + 8x + 6 = 0

b) x2 - 4x -5 = 0

Answer 1

e a letra a espero ter ajudado