Question

simplify
(-3+√5) (-3-
$\sqrt{?}$
5)​

Answer 1

Answer:

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Using formula : a^2 - b^2 = (a+b) (a-b)

(-3 +√5) ( -3 -√5)

= (-3)^2 - (√5)^2

=9 - 5

= 4

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