simplify 1/4^2-1/3^-2+1/2^-2
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Step-by-step explanation:
1/4² - 1/3^-2 + 1/2^- 2
= 1/4² - 3² + 2²
= 1/16 - 9 + 4
= 1 - 144 + 64/ 16
= - 79/16
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