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Popular >

(-2)^x=-128

Solution

(- 2)^{x} = - 128

Solution

x = 7

Solution steps

(- 2)^{x} = - 128

(- a)^{n} = - b,

assuming

n

is odd, solve

a^{n} = b

instead

Solve

2^{x} = 128 : x = 7

Verify Solutions:

x = 7

True

The solution is

x = 7

Popular Examples

e^{3 x} = \frac{9}{2}

2^{x} - 1 = 100

solvefor x,7e^{1x+2.3}=136 solve for

x, 7 e^{1 x + 2.3} = 136

2^{x} = e^{x + 2}

37.5 = 3^{n}

Frequently Asked Questions (FAQ)

What is the answer to (-2)^x=-128 ?
The answer to (-2)^x=-128 is x=7
Solve for x: (-2)^x=-128
The solution is x=7