Factorise the following 4(a-b) square -25( c-d)square
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4(a-b)^2-5(c-d)^2
a^2-b^2 = (a+b )* (a-b)
(4(a-b)+ 5(c-d )) + ((4(a-b)+5a-b)
(4a_4b+5c-5d)+((4a-4b+5a-5b)
adityagour79:
please solve one more answer
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