Question

Find out the following squares by using the identities:
$0.54\times 0.54-0.46\times 0.46$

Answer 1

$(0.54\times 0.54)-(0.46\times 0.46)$

${\left(0.54\right)}^2-{\left(0.46\right)}^2$

$\Rightarrow$ using $a^2-b^2=(a+b)(a-b)$

$=(0.54+0.46)(0.54-0.46)$

$=1\left(0.08\right)$

$=\left(0.08\right).$

Hence, the answer is $\mathrm{0.08.}$