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JAMB - Mathematics (2011 - No. 12)
Factorize completely 9y
2
- 16X
2
(3y - 2x)(3y + 4x)
(3y + 4x)(3y + 4x)
(3y + 2x)(3y - 4x)
(3y - 4x)(3y + 4x)
解释
9y
2
- 16x
2
= 3
2
y
2
- 4
2
x
2
= (3y - 4x)(3y +4x)
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