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disa [49]
3 years ago
9

PLEASE HELP PICTURE SHOWN

Mathematics
2 answers:
Rainbow [258]3 years ago
4 0
Your answer is B. 2
This is because to rationalise the denominator, we need to multiply it by (3 - √7), so we get:
(3 + √7)(3 - √7)
3 × 3 = 9
3 × √7 = 3√7
3 × -√7 = -3√7
√7 × -√7 = -7
So all in all you get 9 - 7 which is 2.

I hope this helps!
Strike441 [17]3 years ago
3 0
I believe that would be B. 2
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