Given $$ a-b=4 $$ , $$ ab=5 $$ , find value of $$ a^2+b^2 $$

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Uniteasy Admin · Accepted Answer

$$\because a-b=4 $$
$$	herefore (a -b)^2=16$$
$$a^2-2ab+b^2=16$$
$$\because ab=5 $$
$$	herefore 2ab=10 $$
$$	herefore  a^2-10+b^2=16$$
$$	herefore a^2+b^2=26 $$

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