The correct answer is 179. I will explain the steps I took to find the correct answer.
First write the problem- 5x^2+x-7, also be reminded x=6.
Second lets begin to start solving it.
6 squares equals 36 ( also known as 6×6)
Now 36*5=180. This is the first half of the problem.
Continuing to solve
180+x-7
Remember x=6 so now 180+6-7
Finally you find your answer by solving 180+-1, which is 179
