Find the values of a and b such that
x2+2x-7=(x+a)^2+b

a=1, b=-8

Step-by-step explanation:

Given: x^2+2x-7

Complete the square: x^2+2x+(1-8)

Rearrange: (x^2+2x+1)-8

Factor: (x+1)^2-8

Therefore, a=1 and b=-8

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540