Simplification (√ 2 - √ 3) (√ 2 + √ 3)

Simplification (√ 2 - √ 3) (√ 2 + √ 3)

(√ 2 - √ 3) (√ 2 + √ 3)
=(√2+√3)²/【(√2)²-(√3)²】
=-(5+2√6)
=-5-2√6