Question

simplify the expression (x²+5xy)+6-xy+2y² and find the value when X= -3 and y = 5​

Answer 1

Answer:

$( {x}^{2} + 5xy) + 6 - xy + 2 {}^{2} = \\ = ( {3}^{2} + 5(3)(5)) + 6 -( 3)(5) + 2( {5})^{2} \\ = ( 9 + 5(15)) + 6 - 15 + 2(25) \\ = (9 + 75) - 9 + 50 \\ = 84 + 41 \\ = 125$