5 and -7 are the solutions to (x-5) (x+7) =12

No

Step-by-step explanation:

Replace x for 5 and -7 separately.

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