factorise 16(x+y)^2-25(x-3y)^2
Answers
Answered by
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Answer:
(9x-19y) (11y-x)
Step-by-step explanation:
16(x+y)² - 25(x-3y)²
= {4(x-y)}² - {5(x-3y)}²
= (4x-4y)² - (5x-15y)²
= (4x-4y+5x-15y) (4x-4y-5x+15y)
= (9x-19y) (11y-x)
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Answered by
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Answer:
16 (x+ y)² - 25(x -3y)²
16( x²+y²+2xy) - 25( x² + 9y² - 6xy)
16x² + 16 y² + 32xy - 25x² + 225y² - 150xy
- 9x² + 241y² - 118xy Ans.
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