Question

Como resolver Log (2x²+x) na base X+2 = 1?

Answer 1

(x+2)^1=2x^2+x
x+2=2x^2+x
2x^2+x=x+2
2x^2+x-x=2
2x^2=2
x^2=2/2
x^2=1
x=V1
x=+1 ou x=-1