factorizar 3x²+15
factorizar x²-10x+25
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Step-by-step explanation:
(1) 3x²+15
we have to take 3 as common
=3(x²+5)
(2) x²-10x+25
x²-5x-5x+25
x(x-5)-5(x-5)
(x-5)(x-5)
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