$$( \frac { 1 } { 2 } ) ^ { - 2 } + ( \frac { 1 } { 3 } ) ^ { - 2 } + ( \frac { 1 } { 4 } ) ^ { - 2 } = ?$$
$29$
$$4+\left(\frac{1}{3}\right)^{-2}+\left(\frac{1}{4}\right)^{-2}$$
$$4+9+\left(\frac{1}{4}\right)^{-2}$$
$$13+\left(\frac{1}{4}\right)^{-2}$$
$$13+16$$
$$29$$
Show Solution
Hide Solution
