Question

slove using (a+b)²=a²+b²+2ab question (5+4)²​

Answer 1

25+16+40

81

is that ok for you

Answer 2

$\red{\bigstar \large\underline{\boxed{\bf\pink{Question:-}}}}$

${\tt{\green {Slove \:using\: {(a+b)}^{2}={a}^{2}+{b}^{2}+2ab\: question\: {(5+4)}^{2}}}}$

$\red{\bigstar \large\underline{\boxed{\bf\pink{Answer:-}}}}$

$\implies \bf \blue {{(5+4)}^{2}}$

${\orange{\boxed{\boxed{\boxed {\purple {\pmb {Using : - \:{(a+b)}^{2}={a}^{2}+{b}^{2}+2ab}}}}}}}$

$\sf \longrightarrow{\red {{(5+4)}^{2}={(5)}^{2}+{(4)}^{2}+2(5)(4)}}$

$\sf \longrightarrow \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: {\red{=25+16+40}}$

$\sf \longrightarrow \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: {\red{=25+56}}$

$\longrightarrow \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: {\orange {\boxed {\boxed {\pink {\sf { = 81}}}}}}$