if a+b =7 and ab=12 , find 3(apower 2 – ab + b power 2)

plz tell me the ans fast plz plz tell me the ans fast
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1 thought on “if a+b =7 and ab=12 , find 3(apower 2 – ab + b power 2)<br /><br />plz tell me the ans fast plz plz tell me the ans fast<br />​”

1. == (a+b)2=a2+b2+2ab

   ==》》72=a2+b2+2(12)

   a2+b2=49−24=25

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