Question

Please solve it fast​

Answer 1

Answer:

So, by the definition of a logarithm, one gets x2+x−2=10 , or x2+x−12=0 . By the quadratic equation, one gets x=(−1(±)√1−4⋅1⋅(−12)2) . That is, x = −1(+−)√492 or x = -4 or x = 3. Since x can't be -4, as the logarithm of a negative number is undefined, one gets x=3.