Question

b)2 elevado a -8 x 2 elevado a 2 x 2

Answer 1

2⁻⁸  X  2²  X 2  = 2⁻⁸⁺²⁺¹       = 2⁻⁵

Answer 2

$\frac{1}{2} ^{8} . 2^{4} = \frac{1}{256} .16= \frac{1}{16}$