Question

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Answer 1

Just do this and foil it:
(5 + 2x)(8 + 2x) = 154
then it'll be in standard form and you can solve it.

Answer 2

is this right??
x=width
Length of room=8+2x
Width=5+2x
(8+2x)(5+2x)=154
40+10x+16x+4x^2=154
4x^2+26x-114=0
2x^2+13x-57=0
2x^2-6x+19x-57=0
2x(x-3)+19(x-3)=0
(2x+19)(x-3)=0
x=-19/2 x=3

Answer 3

so 3 feet on each side?

Answer 4

@anas2000