Question

simple (-3+√5) (-3-√5)​

Answer 1

(-3+√5) (-3-√5)

=(9+3√5) +(3√5-5)

=9+3√5 +3√5-5

=9-5+3√5+3√5

=4+6√5

Answer 2

Step-by-step explanation:

( -3 + √5 )( -3 - √5 )

= ( -3 × -3 ) + ( -3 × -√5 ) + ( √5 × -3 ) + ( √5 × (-√5) )

= 9  +  3√5  -  3√5  -  5

=  9  -  5

=  4.

By Formula :-

( A + B )( A - B ) =  A²  -  B²

∴ ( -3 + √5 ) × ( -3 - √5 )

= 3²  -  √5²

= 9  -  5

= 4.

∴ Answer :-  4

I Hope My Answer Helped. Thank You !!!