Question

Answer needs to be in rational for, do not use mixed numbers.B98%7D-6%5Csqrt%7B72%7D" id="TexFormula1" title="\frac{1}{2} \sqrt{98}-6\sqrt{72}" alt="\frac{1}{2} \sqrt{98}-6\sqrt{72}" align="absmiddle" class="latex-formula">

Answer 1

Answer:

Step-by-step explanation:

You can't get a rational result. √2 does not go away.

√98  = √(49 * 2) = √7 * 7 * 2 = 7√2

6*√72 = 6 * √(2 * 2 * 2 * 3*3) = 6 * 2 * 3 √2 = 36√2

1/2 * 7√2 - 6*6*√2

√2 (3.5 - 36)

√2 * (-32.5) or

-32.5 * √2

Answer 2

Answer:

$\frac{1}{2} \times 7 \sqrt{2} - 36 \sqrt{2} \\ \frac{7 \sqrt{2} }{2} - 36 \sqrt{2} \\ \frac{65 \sqrt{2} }{2} \\ - 45.96$