How do you evaluate #5\sqrt { x + 2} + 3\sqrt { x + 2}#?

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Answer 1 · 2017-10-08T22:14:10

You can’t evaluate this expression, but you can simplify it to:

#8sqrt(x+2)#

This answer is found by combining like radicals.

Pretend that #sqrt(x+2)=y#

Then you have #5y+3y#.

Normally when you see this, you combine the #y#’s to get:

#8y#

Replace #y# with #sqrt(x+2)# and you get:

#8sqrt(x+2)#