Question

find the square of this binomial [(xy+9)-5]^2

Answer 1

[(xy+9)-5]^2 = [(xy+9)-5][(xy+9)-5]

[(xy+9)-5]^2 = (xy+9)^2-5(xy+9)-5(xy+9)+25

[(xy+9)-5]^2 = (xy+9)^2-10(xy+9)+25

[(xy+9)-5]^2 = (xy)^2+18xy+81-10xy-90+25

[(xy+9)-5]^2 = x^2y^2+8xy+16

Answer 2

thanks so much!!

Answer 3

np