Find the difference — task. Maths CBSE Live product, Class 8 (2025-26).

If \(a\) \(=40\) , \(b\) \(=70\) , \(m\) \(=\) 2, and \(n\) \(=\) 8, then evaluate the value of

(42 \times 78)

\(-\)

(38 \times 62)

using the identity.

Answer:

The product

(42 \times 78)

is expanded using the identity of \((a+m)(b+n)\) \(=\) .

The value of

(42 \times 78)

\(=\)

The product

(38 \times 62)

is expanded using the identity of \((a-m)(b-n)\) \(=\) .

The value of

(38 \times 62)

\(=\)

The value of

(42 \times 78)

\(-\)

(38 \times 62)

\(=\)

Did you find an error?

5. Find the difference