Question

Rationalize the denominater in 2/√7+2

Answer 1

Answer:

2√7-4 / 3

Step-by-step explanation:

2/√7+2

2 x √7-2 /√7+2 x√7-2

2(√7-2) / (√7)squared - (2)squared   --- using (a + b)(a - b) = a square - b square

2√7-4 / 7 - 4

2√7-4 / 3