Question

78) Resolva as equações:
a) x(x - 1) = 11x - 36
b) 2x - 2x + 15 = 0​

Answer 1

a) x(x-1) = 11x -36
=x2–x=11x–36
=x2–x=11x+36=0
=x2–12x +36=0
=(x–6)2(ao quadrado) =0
=x–6=0
=x–6

b)2x–2x+15=0
=15=0