JAMB - Mathematics (2011 - No. 12)

Factorize completely 9y2 - 16X2
(3y - 2x)(3y + 4x)
(3y + 4x)(3y + 4x)
(3y + 2x)(3y - 4x)
(3y - 4x)(3y + 4x)

Explanation

9y2 - 16x2

= 32y2 - 42x2

= (3y - 4x)(3y +4x)

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