8-the formula to find an exterior angle of a polygon is:
360/n
(n is the number of sides of the polygon)
so the answer is 40
9 - the formula to find an interior angle of polygon is:
so the answer is 135
good luck
Answer:
When I squared the binomials, they became quadratic trinomials.
(Not sure if this is the kind of answer you want, sorry if it's not!)
(x-3)² = x² - 6x + 9
(x+2)² = x² + 4x + 4
(x-4)² = x² - 8x + 16
(x+5)² = x² + 10x + 25
8 percent because 8 percent of 4.5 is 0.36 and you just add and you get 4.86