Factorise 25x^2 -4y^2 -9z^2 +12yz
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Answer:
(5x+2y-3z)(5x-2y+3z)
Step-by-step explanation:
25x²-(4y²+9z²-2×3×2yz)
=(5x)²-(2y-3z)²
=(5x+2y-3z)(5x-2y+3z)
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