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azamat
3 years ago
14

NEED URGENT HELP!! WILL GIVE BRAINLIEST

Mathematics
2 answers:
Flauer [41]3 years ago
7 0

1. You need to multiply the denominator by something that will make the content of the radical be a square—so that when you take the square root, you get something rational. Easiest and best is to multiply by √6. Of course, you must multiply the numerator by the same thing. Then simplify.

\displaystyle\frac{2}{\sqrt{6}}=\frac{2}{\sqrt{6}}\cdot\frac{\sqrt{6}}{\sqrt{6}}\\\\=\frac{2\sqrt{6}}{\sqrt{6}\cdot\sqrt{6}}=\frac{2\sqrt{6}}{6}\\\\=\bf{\frac{\sqrt{6}}{3}}

2. Identify the squares under the radical and remove them.

5\sqrt{12xm^3}=5\sqrt{(4m^2)(3xm)}=5\sqrt{(2m)^2}\sqrt{3xm}\\\\=5\cdot 2m\sqrt{3xm}=\bf{10m\sqrt{3xm}}

nevsk [136]3 years ago
6 0

Rationalize means to eliminate the radical (square root) from the denominator.

\frac{2}{\sqrt{6}} * \frac{\sqrt{6}}{\sqrt{6}} = \frac{2\sqrt{6} }{6} = \frac{\sqrt{6}}{3}

***************************************

Simplify means to move the "groups" from inside the radical to outside the radical.

 5\sqrt{12xm^{3} }

= 5\sqrt{2 * 2 * 3 * x * m * m * m }

= 5\sqrt{(2 * 2) * 3 * x * m * (m * m) }

= 5 * 2 * m\sqrt{3 * x * m}

= 10m\sqrt{3xm}

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