Question

Rationalise the denominator of
$\frac{4}{ \sqrt{11} - \sqrt{7} }$
​

Answer 1

Answer:

(4)

(✓11-✓7)

(4) * (✓11+✓7)

(✓11-✓7) * (✓11+✓7)

4 (✓11+✓7)

(11 * 7)

4 (✓11+✓7)

77

final ans: ✓11+✓7

19.25

Hope this hepls you!