Question

What is the value of the expression b times the quantity begin square root a squared minus nine end square root end quantity minus b squared when a equals five and b equals one?

0

3

4

twelve

Answer 1

\[\large b \sqrt{a^2 - 9} - b^2\]


When a = 5 and b = 1 we have

\[\large \sqrt{(5)^2 - 9} - 1\]
\[\large \sqrt{25 - 9} - 1\]
\[\large \sqrt{16} - 1\]etc.. until you get...?

Answer 2

I might neede help

Answer 3

Okay :)

So we left off at

\[\large \sqrt{16} - 1\]

We know that the square root of 16 is 4...(since 4 x 4= 16)

So we have

\[\large 4 - 1 = ?\]

Answer 4

3

Answer 5

And there's you answer :)