Question

9(x+y)^2-24(x^2-y^2)+16(x-y)^2

Answer 1

Step-by-step explanation:

9(x^2+y^2+2xy)-24x^2-24y^2+16(x^2+y^2-2xy)

9x^2+9y^2+18xy-24x^2-24y^2+16x^2+16y^2-32xy

(9x^2-24x^2+16x^2)+(9y^2-24y^2+16y^2)+(18xy-32xy)

(x^2)+(y^2)+(-14xy)

x^2+y^2-14xy