Question

simplify the following using exponential expressions
(4^-1 + 8^-1) ÷ 4/9^-1​

Answer 1

Answer:1/6✳️

Step-by-step explanation:

Note:When the Index of a base is negative.Then reciprocal the base.

Reciprocal of:

4= 1/4

8= 1/8

4/9 = 9/4

Hence,

=(1/4 + 1/8) ÷ 9/4

=3/8 ÷ 9/4

=3/8 × 4/9

=1/6