If a-b = 4 and ab = 45, find the value of (a+b)^2
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oh a simple and easy one
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Kushwahanandani123:
Yaa..correct ...bt actually....I was not sure ...about my answer ...that's because ...am asking that question
ok..... is it clear now to you
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(a+b)² =a²+2ab+b² general equation
a-b=4 –1) equation 1
ab=45 –2) equation 2
it can't be solved with a-b=4
it should be a + b=4
so then it can be solved further by using a formula we know that
(a+b) ²=a² + 2* a *b+ b²
=(45/ b)^2+2*45+(45/ a)^2
=2025/ b²+90+2025 / a^2
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