Question

Simplify 9 square root of 40

Answer 1

Can I take the square root of 40?

Answer 2

If not, then the next question to ask yourself is if 40 has any factors that are perfect squares.

Answer 3

OK

sqrt40 + sqrt 90

sqrt(4 * 10) + sqrt (9 * 10)

2sqrt 10 + 3 sqrt 10

5 sqrt10

Hope that helps.

Answer 4

where did sqrt 90 come from @agapelove ?

Answer 5

Sorry i meant 9

Answer 6

I have to redo the calculations

Answer 7

answer your question "can you take the square root of 40"?
Write 40 as the product of two numbers, one of which is the greatest perfect square (4, 9, 16, 25, etc) factor of 40 then split into two radicals and simplify the perfect square part:
√40 = √(4 • 10) = √4 • √10 = 2√10