Question

Math help please ?

Answer 1

I have 1 and 2
I need help with the rest

Answer 2

for the third one you have
\[\sqrt{128*x^5*y^2} = \sqrt{16*8*x^2*x^2*x*y^2} \]
\[= x*x*y\sqrt{4^2*2^2*2*x}= x^2*y*4*2*\sqrt{2x} = 8x^2y\sqrt{2x}\]

Answer 3

Thats really confusing :/

Answer 4

@tomo

Answer 5

sqrt(x^2) = x

that is the fundamental realization you must make

the square root of something squared is always just that something

Answer 6

I dont get it

Answer 7

if you don't understand square roots, then you should really look at these videos

https://www.khanacademy.org/math/arithmetic/exponents-radicals/radical-radicals/v/understanding-square-roots

Answer 8

I do understand them, I just dont understand you.

Answer 9

@swalehe do you know ?

Answer 10

you just break up the different expressions until you have something in the form x^2