Question

If x+y=7 and xy =3 what is the value of x2 + y2

Answer 1

$\huge \underline{GIVEN: }$

$\green{x + y = 7......1} \\ \\ \red{xy = 3}$

$\huge \underline{ To \: Find : }$

$\red{2x + 2y}$

$\huge\underline{ \underline{ \mathbb{ { { So{ {Lu{ {TION \: : }}}}} }}}}$

$\pink{2x + 2y = 2(x + y)} \\ \\ \\ \blue{2(7) \: \: \: \: \: \: \: (x + y = 7)} \\ \\ \huge \underline\red{14 \: is \: answer}$