Question

304square
$304 {?}^{2}$
a-b
$a - b {?}^{2}$
​

Answer 1

$\red{ \huge{ \underline{ \overline{ \mid{ \bold{ \purple{ \: \: SOLUTION \: \: \red{ \mid}}}}}}}} \:$

$\bold{(304) {}^{2} } \\ \\ \bold{ = (300 + 4) {}^{2} } \\ \\ \\ \underline{ \bold{ \: \: using \: \: \: \red{(x + y) {}^{2} = x {}^{2 } + xy + y {}^{2} } \: \: \: formula \: \: }} \\ \\ \\ \bold{(300) {}^{2} + 2 \times 300 \times 4 + (4) {}^{2} } \\ \\ \bold{ = 90000 + 2400 + 16} \\ \\ \bold{ = 92416}$

$\boxed{ \boxed{ \mathbb{ \huge{ \pink{ \: \: 304 {}^{2} = 92416 \: \: }}}}}$

Answer 2

$\huge\mathtt\blue{Answer}$

$\begin{lgathered}\bold{(304) {}^{2} } \\ \\ \bold{ = (300 + 4) {}^{2} } \\ \\ \\ \underline{ \bold{ \: \: using \: \: \: \red{(x + y) {}^{2} = x {}^{2 } + xy + y {}^{2} } \: \: \: formula \: \: }} \\ \\ \\ \bold{(300) {}^{2} + 2 \times 300 \times 4 + (4) {}^{2} } \\ \\ \bold{ = 90000 + 2400 + 16} \\ \\ \bold{ = 92416}\end{lgathered}$

$\boxed{ \boxed{ \mathbb{ \huge{\red{ \: \: 304 {}^{2} = 92416 \: \: }}}}}$