Question

help!

Answer 1

√(100x^4 )/√(25x^2 )

Answer 2

@jim_thompson5910 help please?

Answer 3

combine the roots, and then reduce

100/25 = 4

x^4/x^2 = x^2

so we'll have

sqrt(4x^2) = sqrt( (2x)^2 ) = 2x

where x >= 0

Answer 4

I got lost in this part: sqrt(4x^2) = sqrt( (2x)^2 ) = 2x

Answer 5

@jim_thompson5910

Answer 6

oh wait! I think I get it now! thanks!

Answer 7

sorry went afk for a sec, but

(2x)^2 = 2^2 * x^2 = 4x^2

so that's how I got 4x^2 = (2x)^2

Answer 8

the square root will undo the square in (2x)^2, which is why

sqrt( (2x)^2 ) = 2x