Question

solve for x
(i) x^-2=9
(ii) 4^x=32
(iii) 9×3^x-1=1/27
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Answer 1

Huiiii

Your answer is

${x}^{ - 2} = 9 \\ {x}^{ - 2} = \frac{1}{3} ^{ - 2} \\ \\ bases \: are \: same \: so \: equate \: the \: power \\ x = \frac{1}{3}$

Rest of them were done by this method

as

x=5

Answer 2

Answer:

x

−2

=9

x

−2

=

3

1

−2

basesaresamesoequatethepower

x=

3

1

Rest of them were done by this method

as

x=5