Your answers Factor this expression completely and then place the factors in the proper location on the grid.
904 62

9a^4 - b^2

= (3a^2)^2 - b^2  

= (3a^2 + b)(3a^2 - b) using a^2 - b^2 = (a+b)(a-b)

hope it helps.

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