Given $$ a+b=2 $$ , $$ ab=1 $$ , find value of $$ a^2+b^2 $$

Question

Uniteasy Admin · Accepted Answer

$$\because a+b=2$$
Square both sides of the equation 
$$(a+b)^2=4$$
$$a^2+b^2+2ab=4$$
$$	herefore a^2+b^2 $$
$$=4-2ab$$
$$=4-2\cdotp 1$$
$$=2 $$