ExamPlay Light Logo
Conectare

WAEC - Mathematics (2009 - No. 30)

Simplify (x - 3y)2 - (x + 3y)2
2(x + 3y)
(2x - 3y)
-12xy
6xy

Explicaţie

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

[(x + 3y + x + 3y)] = [-6y] [2x]

= -12xy

Comentarii (0)

Publicitate