Question

6.4 × 6.4 - 3.6 × 3.6 / 6.4 × 3.6​

Answer 1

As per data given in the question,

We have to determine the value of $\frac{(6.4\times 6.4)-(3.6\times 3.6)}{6.4 \times 3.6}$

For determining the value, we will solve the expression by using identity.

As we know that,

$(a+b)(a-b)=a^2-b^2$

So, applying the given identity in the given expression,

We will get,

$\frac{(6.4\times 6.4)-(3.6\times 3.6)}{6.4 \times 3.6}\\=\frac{(6.4^23.6^2)}{6.4 \times 3.6}\\=\frac{40.96-12.96}{23.04}\\=\frac{28}{23.04}\\=1..215277 \approx 1.22$

Answer 2

As per data given in the question,

Given data:-$\frac{(6.4 \times 6.4)-(3.6 \times 3.6)}{6.4 \times 3.6}$

For determining the value, we will solve the expression by using the identity.

we will know that,

$(a+b)(a-b)=a^{2}-b^{2}$

So, using the given identity in the given expression,

Then,We will get,

$\begin{array}{l}\frac{(6.4 \times 6.4)-(3.6 \times 3.6)}{6.4 \times 3.6} \\\\=\frac{\left(6.4^{2} 3.6^{2}\right)}{6.4 \times 36} \\\\=\frac{40.96-12.96}{23.04} \\\\=\frac{28}{23.04} \\\\=1 . .215277 \approx 1.22\end{array}$