-21- m 2-4 m 2-2- m 2 equalsA- -6 m 2-6B- 6 m 2-6C- 6 m 2-6D- -6 m 2-6

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-21- m 2-4 m ...

Question

$- 2 (1 - m^{2}) - 4$ $m^{2} - (2 - m^{2})$ equals

$6 m^{2} + 6$

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$- 6 m^{2} - 6$

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$6 m^{2} + 6$

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$- 6 m^{2} + 6$

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$- 2 (1 - m^{2}) - 4 {m^{2} - (2 - m^{2})}$ =______.

m_{1}

m_{2}

- 4 m_{1} - 4 m_{2} = 3 m_{1} - 6 m_{2}

(6 m^{3} - 17 m^{2} - 5 m + 6)

(6 m^{3} - 5 m^{2} - 3 m + 2)

6 m^{2} + \frac{2}{m^{2}} = 7

m = \pm \sqrt{\frac{2}{3}}, \pm \frac{1}{\sqrt{2}}

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