Question

simplify the expression(√5-√2)(√5+√2)



Please....​

Answer 1

$( \sqrt{5 } - \sqrt{2} )( \sqrt{5} + \sqrt{2} ) \\ (a + b)(a - b) = a {}^{2} - b {}^{2} \\ ( \sqrt{5} ) { }^{2} - ( \sqrt{2} ) {}^{2} \\ 5 - 2 \\ 3$

Answer 2

(√5-√2)(√5+√2)

we know that a^2-b^2=(a+b)(a-b)

√5^2-√2^2

5-2

3 answer