Help please. Rationalize the denominator and simplify. The variable represents a positive real number.

Question

+5

625

2

Rationalize the denominator and simplify. The variable represents a positive real number.

3 / (√a+8)

Guest Sep 1, 2015

+130466

+10

Best Answer

3 / (√a+8) nultiply the top and bottom by (√a - 8) and we have

[3 (√a - 8)] / [ (√a+8) (√a-8) ] =

[3√a - 24] / [ a - 64 ]

CPhill Sep 1, 2015

CPhill · Answer 1 · 2015-09-01T10:11:08

3 / (√a+8) nultiply the top and bottom by (√a - 8) and we have

[3 (√a - 8)] / [ (√a+8) (√a-8) ] =

[3√a - 24] / [ a - 64 ]

Guest · Answer 2 · 2015-09-01T10:18:15

Thanks CPhill :)