Question

578³ + 6889² - 7788² ÷ 1 =

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)