Factorise 27p 2 x 2 - 48y 2 .
MATHEMATICS
WAEC 2004
Factorise 27p2x2 - 48y2.
- A. 9(3px - 4y)2
- B. 3(3px - 4y)(3px - 4y)
- C. 9(px - 4y)(3p x + 4y)
- D. 3(3px -4y)(3px +4y)
Correct Answer: D. 3(3px -4y)(3px +4y)
Explanation
27p2x2 - 48y2; 3(32 p2x2-42y2)
3[(3px)2 - (4y)2]; 3[(3px-4y)(3px+4y)]
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