Factorize 625 - y2.
solution
We use difference of
two squares a2 – b2 = (a - b)(a + b)
625 - y2 =
252- y2
= (25 - y)(25 + y)
Hence 16 - y2 = (25 - y)(25 + y)
TRY THIS…………….
factorize 144 - w2
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