Question

Square root 28 + square root 45?

I don't understand. I got 2 sqrt 7 + 3 sqrt 5

Answer 1

My teacher said that this was the wrong answer, but I can't figure out any other way to do it

Answer 2

@Mivins1 don't feel bad, I failed with you, too. hihihi

Answer 3

and we have wolfram supports us http://www.wolframalpha.com/input/?i=+simplify+sqrt%2828%29%2Bsqrt%2845%29
Print it out and submit

Answer 4

That's what I told her! She won't listen :(

Answer 5

or she wants you to calculate until get the decimal number? use calculator to get it

Answer 6

It has something to do with multiplying radicals and the radicand not being the same

Answer 7

She doesn't want me to use a calculator

Answer 8

http://www.wolframalpha.com/input/?i=+sqrt%2828%29%2Bsqrt%2845%29%3D

Answer 9

so, go to department chair to ask for the answer.