Question

What is the value of the expression begin square root symbol a squared minus b plus nineteen end square root symbol minus b squared when a equals seven and b equals four?

negative six

negative seven

negative eight

three

Answer 1

@ImNotGoodAtMath

Answer 2

\[\sqrt{7^2-4+10} - 4^2\]

Answer 3

that look about right?

Answer 4

instead of 10 19 typo

Answer 5

thanks

Answer 6

its -8 but wanna know how to get there?

Answer 7

sure

Answer 8

you cant move the 7^2 outside since theres numbers being added to it.

Answer 9

7^2=49
49-4+19=64

sqrt of 64 = 8

4^2 = 16

8-16=-8

Answer 10

tyler i recomend next time get hte person u are helping to do some of the work...

Answer 11

and let him get the answer