what is a radical expression for a^2=20

Question

0

467

1

Guest Mar 1, 2015

+130516

+5

Best Answer

a^2 = 20 take the square root of both sides [there will be two answers]

a = ±√20 = ±√(4 * 5) = ±(√4 * √5) = ±2√5

CPhill Mar 1, 2015

CPhill · Answer 1 · 2015-03-01T08:38:03

a^2 = 20 take the square root of both sides [there will be two answers]

a = ±√20 = ±√(4 * 5) = ±(√4 * √5) = ±2√5