Question

Simplify by rationalising the denominator 7/(4-√3) i got 28 + 7√3 /14 is that correct.
If u dont know the answer scroll down its better than writing rubbish thing just to prove ur self as idiot.​

Answer 1

Answer:

$\frac{7}{4 - \sqrt{3} } = \frac{7}{4 - \sqrt{3} } \times \frac{4 + \sqrt{3} }{4 + \sqrt{3} } \\ = \frac{28 + 7 \sqrt{3} }{ {(4)}^{2} - {( \sqrt{3)} }^{2} } \\ = \frac{28 + 7 \sqrt{3} }{16 - 3} \\ = \frac{28 + 7 \sqrt{3} }{13}$