Factorize completely 9y2 - 16X2 - JAMB Mathematics 2011 Question
Factorize completely 9y2 - 16X2
A
(3y - 2x)(3y + 4x)
B
(3y + 4x)(3y + 4x)
C
(3y + 2x)(3y - 4x)
D
(3y - 4x)(3y + 4x)
correct option: d
9y2 - 16x2
= 32y2 - 42x2
= (3y - 4x)(3y +4x)
= 32y2 - 42x2
= (3y - 4x)(3y +4x)
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