Question

4 upon 7 + 4 root 3​

Answer 1

Answer:Given that

4/7+4√3

Multiply by 7-4√3 in nemrator and denominator

4(7-4√3)/49-48

4(7-4√3)

Hope it will help you

Step-by-step explanation:

Answer 2

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4 upon 7 + 4 root 3

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$\bf:\implies \frac{4}{7 + 4 \sqrt{3} } \\ \\\bf:\implies \frac{4}{7 + 4 \sqrt{3} } \times \frac{7 - 4 \sqrt{3} }{7 - 4 \sqrt{3} } \\ \\\bf:\implies \: using(a + b)(a - b) = {a}^{2} - b {}^{2} \\ \\ \bf:\implies \frac{4(7 - 4 \sqrt{3} )}{49 - 48} \\ \\ \bf:\implies \frac{4(7 - 4 \sqrt{3}) }{1} \\ \\ \bf:\implies 4(7 - 4 \sqrt{3})$

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Rationalising : Rationalising the denominator means rewriting a fraction so ,that the bottom only contains rational numbers.

Rational numbers :- Rational numbers are numbers that can be expressed in the form of p/q where p and q are intigers and q is not equal to 0.