Question

if a-b=8 and ab=5,find the value of (a^2+b^2

Answer 1

Answer:

1

Step-by-step explanation:

Answer 2

Answer:

if a-b=8 then

ab=5

Step-by-step explanation:

squaring for both sides on equation a-b=8

$(a-b)^{2}$=$8^{2}$

$a^{2}+ b^{2}-2ab=64\\a^2+b^2-2(5)=64 (as we know ab=5)\\a^2+b^2=64+10\\a^2+b^2=74$

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