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">
2 answers:
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:
![\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](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%20%20%5Ctimes%207%20%5Csqrt%7B2%7D%20%20-%2036%20%5Csqrt%7B2%7D%20%20%5C%5C%20%20%5Cfrac%7B7%20%5Csqrt%7B2%7D%20%7D%7B2%7D%20%20-%2036%20%5Csqrt%7B2%7D%20%20%5C%5C%20%20%5Cfrac%7B65%20%5Csqrt%7B2%7D%20%7D%7B2%7D%20%20%5C%5C%20%20-%2045.96)
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