Question

If a-b=4 and ab=9 find a^2+b^2

Answer 1

I hope it will help you

Answer 2

Answer:

34

Step-by-step explanation:

a+b= $\sqrt{(a-b)^2+4ab}$

a+b= $\sqrt{16+36}$

squaring on both sides, we get

a^2 +b^2 +2ab=52

a^2+b^2=52-2x9=52-18=34

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