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Factotise: 16(x+y)^2 - 25(x-y)^2​

Answer»

-STEP explanation:4^2(x+y)^2 - 5^2(x-y)2= (4(x+y))^2 - (5(x-y))^2This is in the form a^2-b^2 = (a-b)(a+b)So,a= 4(x+y)b = 5(x-y)(4(x+y) - 5(x-y)) (4(x+y) + 5(x-y))



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