Welcome 2016! Part 25

Algebra Level 1

2 − ( − 2 ) − 2 = ? \large {2}-({-2})^{{-2}} = \, ?

9 4 \dfrac{9}{4} -2 7 4 \dfrac{7}{4} 2 None of these choices

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Anish Harsha by Anish Harsha , 20, India

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2 solutions

Anish Harsha
Jan 1, 2016

2 − ( − 2 ) − 2 2-(-2)^{-2} = 2 − 1 ( − 2 ) 2 =2-\dfrac{1}{(-2)^2} = 2 − 1 4 =2-\dfrac{1}{4} = 8 4 − 1 4 =\dfrac{8}{4}-\dfrac{1}{4} = 7 4 =\dfrac{7}{4}

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Sai Ram
Jan 2, 2016

2 − ( − 2 ) − 2 = 2 − 1 ( − 2 ) 2 = 2 − 1 4 = 7 4 2-(-2)^{-2} = 2-\dfrac{1}{(-2)^2} = 2-\dfrac{1}{4} = \dfrac{7}{4}

1 Helpful 0 Interesting 0 Brilliant 0 Confused

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