factorise 25+10a+a² into factors
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Step-by-step explanation:
a
2
−10a+25
=a
2
−5a−5a+25, split middle term so that resultant is same
=(a
2
−5a)+(−5a+25), group pair of terms
=a(a−5)−5(a−5), factor each binomials
=(a−5)(a−5), factor out common factor (a−5)
=(a−5)
2
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