Question

[4 - (2/3) ^ 2] ^ - 1 * (1/2) ^ -2 =

Answer 1

$(4 - \frac{4}{9} ) {}^{ - 1} \times {2}^{2} = ( \frac{36}{9} - \frac{4}{9} ) {}^{ - 1} \times 4 = ( \frac{32}{9} ) {}^{ - 1} \times 4 = \frac{9}{32} \times 4 = \frac{9}{8 \times 4} = \frac{9}{8} = 1 \frac{1}{8}$