Question

express the following with rational denominator.​

Answer 1

Step-by-step explanation:

I hope it is helpful for u

Answer 2

Answer:

√(a²+b²) - a

Step-by-step explanation:

b²/√(a²+b²) + a

By rationalising we get

(b²/√(a²+b²) + a) × (√(a²+b²) - a) / (√(a²+b²) - a)

on multiplication That gives

b²× (√(a²+b²) - a) divided by a²+b²-a²

That gives

[b²× (√(a²+b²) - a)] / b²

so the final answer is

√(a²+b²) - a