Question

solve this question using algebraic identities 2 X + Y square using identity (a+b)square=a square+b square+2ab

Answer 1

(2x)2+(5)2+2(2x)(5)
4x2+25+20x

Answer 2

${(2x + 5)}^{2} \\ \\ by \: using \: identity \: \: \: {(a + b)}^{2} = {a}^{2} + 2ab + {b}^{2} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: {(2x + 5)}^{2} = {(2x)}^{2} + 2 \times 2x \times 5 + {(5)}^{2} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: {(2x + 5)}^{2} = {4x}^{2} + 20x + 25 \: \: \: \: \: \: answer$