if a+b=9 and ab=14
then find a²-b²
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If a+b=14 and ab =20, what is a2+b2?
We know from the binomial theorem that (a+b)^2 = a^2 + 2ab +b^2
In this case a^2 +b^2 = (a+b)^2 - 2ab.
Which will be equal to 14^2 - 2(20) =156.
I hope this will help you
if not then comment me
If a+b=14 and ab =20, what is a2+b2?
We know from the binomial theorem that (a+b)^2 = a^2 + 2ab +b^2
In this case a^2 +b^2 = (a+b)^2 - 2ab.
Which will be equal to 14^2 - 2(20) =156.
I hope this will help you
if not then comment me
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