Question

Find the product of (8+ √2) (8 - √2)

Answer 1

Answer:

$(8 + \sqrt{2} )(8 - \sqrt{2} )$

Using the formula, (a+b) (a-b)

$(8) {}^{2} - ( \sqrt{2} ) {}^{2}$

$64 - 2$

$62$

Answer 2

Answer:

(8+√2) (8-√2)

By using identity (a+b) (a-b) = a^2 - b^2

(8)^2-(√2)^2=64-2=62