Question

Simplify the raidcal. 7 sqrt 72

Answer 1

9*7
21sqrt(7)
Not trying them?

Answer 2

or even 9*8 :P

Answer 3

7sqrt(72)
7sqrt(9*4*2)
42sqrt(2)

Answer 4

i got 21 sqrt 8

Answer 5

42aqrt(2)

Answer 6

8 is the product of a square and 2 so can be simplified further

Answer 7

42sqrt(2)

Answer 8

\[7\sqrt{72}=7\sqrt{3 \times 3 \times 2 \times 2 \times 2}=7\sqrt{3^2}\sqrt{2^3} = 7(3)(2)\sqrt{2}=42\sqrt{2}\]

Answer 9

42 sqrt 2