How do you simplify 7sqrt(28)?

2 Answers
Mar 5, 2018

You find perfect squares that are factors in the radical.

Explanation:

√28

√4=2

7*2√7

14√7

Mar 5, 2018

14sqrt(7)

Explanation:

28 is the same as 2xx14 witch in turn is the same as 2^2xx7

Write as 7sqrt(2^2xx7)

Taking the 2^2 'outside' the square root changes it from 2^2" to "2

7sqrt(2^2xx7) = 7xx2xxsqrt(7)

14sqrt7