Can you please factorise these equations 3a^2+7a and x^2+7x+12 and can u explain how to do it

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04-10-2016
Mathematics

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Can you please factorise these equations 3a^2+7a and x^2+7x+12 and can u explain how to do it

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04-10-2016

3a^2+7a
factor each and find common fctor
3a^2=3*a*a
7a=7*a
common factor is a

a(3a+7)

x^2+7x+12
hmm what multiplies to 12 and adds to 7
3 and 4
(x+3)(x+4)

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