ln (x^2 +x-12)=3ln2

Answer 1

ln (x^2 +x-12)=3ln2
ln (x^2 +x-12)=ln2^3
ln (x^2 +x-12)=ln8
x^2+x-12=8
x^2+x-20=0
Factor or use the quadratic formula to solve for x.