Question

Rationalise 5/-2√7 with steps please​

Answer 1

5 / - 2 √ 7

5 √ 7 / - 2 ( √ 7 ) ²

5 √ 7 / - 2 × 7

5 √ 7 / - 14

Answer 2

5/-2√7 can be rationalised with the following steps:

1.) 5/-2√7 × √7/√7

2.) 5√7/-2√7×√7

3.) 5√7/-2×7

4.) 5√7/-14

5.) -5√7/14