Question

State true or false :tha product of(x+y+2)and (x-2y+3) is (x²-2y²-xy+5x-y+6)​

Answer 1

Answer:

Step-by-step explanation:

(x+y+2)(x-2y+3) = x(x-2y+3)+y(x-2y+3)+2(x-2y+3)

                        = x²-2xy+3x+xy-2y²+3y+2x-4y+6

                       = x²-2y²+5x+xy-y+6

                        = x²-2y²-xy+5x-y+6