WAEC - Mathematics (2019 - No. 31)
Factorize completely; (2x + 2y)(x - y) + (2x - 2y)(x + y)
4(x - y)(x + y)
(4(x - y)
2(x - y)(x + y)
2(x - y)
คำอธิบาย
(2x + 2y)(x - y) + (2x - 2y)(x - y)
2(x + y)(x - y) + 2(x - y)(x + y)
4(x - y)(x + y)
(2x + 2y)(x - y) + (2x - 2y)(x - y)
2(x + y)(x - y) + 2(x - y)(x + y)
4(x - y)(x + y)