Question

Without actual multiplication find the value of

(.)

− (.)





​

Answer 1

Answer:

687×687−313×313

=(687)

2

−(313)

2

Using identity (a+b)(a−b)=a²−b²

=(687+313)(687−313)

=1000×374

=3,74,000

Step-by-step explanation:

Hope it helps!!

Answer 2

Answer:

$\huge\color{pink}{\underline{\underline {Question}}}$

Without actual multiplication find the value of

(.)

− (.)

$\huge\color{blue}{\underline{\underline {Answer}}}$

687×687−313×313

=(687)

2

−(313)

2

Using identity (a+b)(a−b)=a²−b²

=(687+313)(687−313)

=1000×374

=3,74,000

HOPE IT HELPS MARK AS BRAINLIEST☺✌