Question

simplify:(2✓3+✓5) (2✓3-✓5)​

Answer 1

(2√3+√5)(2√3-√5)

=(2√3)²-(√5)²

=12-5

=7

Answer 2

Answer:

$→(2 \sqrt{3} + \sqrt{5} )(2 \sqrt{3} - \sqrt{5} ) \\ = {(2 \sqrt{3}) }^{2} - {( \sqrt{5} )}^{2} \\ = 12 - 5 \\ = \boxed7✓$

• 7 is the right answer.