Question

The area of a square is found by squaring one of its sides, (A = s2). A certain square has an area of z2 + 18z + 81. Factor the trinomial to find a side of the square.



side = z + 27
side = z + 18 *******
side = z + 9
I think it is the one with ********

Answer 1

help me @some_someone

Answer 2

so to factor the trinomal:
z^2+18z+81

In this problem 9*9=81 and 9+9=18, so insert 9 as the right hand term of one factor and 9 as the right-hand term of the other factor.
(z+9)(z+9)

Combine the two common factors of (z+9) by adding the exponents.
(z+9)^2

Answer 3

so I was rong

Answer 4

yeah you were a bit off.
so since it would factor out to be (z+9)^2 this would be equivalent to (z+9)(z+9)
so, there for side = z + 9

Answer 5

okay thanks