Factorise 4zsquare -(3x+5y)square
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Answer:
4z² - 9x²+25y²+30xy
Step-by-step explanation:
4z²- (3x+5y)²
4z² - (3x)²+(5y)²+2(3x)(5y)
4z² - 9x²+25y²+30xy
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