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# PLEASE HELP ASAP!! Evaluate the expression for x=-2. No decmial values in answer. 1/x/x^4.

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Evaluate the expression for x=-2. No decmial values in answer. 1/x/x^4. The answer is -1/32 but i dont know how to solve it i keep getting 8 please help and explain what i did wrong. This is using exponent rules! Thank you so much! :)

Mar 8, 2021

### 2+0 Answers

#1
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Evaluate the expression for x=-2. No decmial values in answer. 1/x/x^4. The answer is -1/32 but i dont know how to solve it i keep getting 8 please help and explain what i did wrong. This is using exponent rules! Thank you so much! :)

1                              x4

———   divided by   ———

x                              1

To divide by a fraction, invert the divisor and multiply.

1                                1

———   multiplied by  ———

x                                x4

1                                1

———   multiplied by  ———

–2                              (–2)4

1             1

———  •  ———

–2            16

Take it from there.

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Mar 8, 2021
#2
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Here's another way to look at it.  I'm not sure what "using exponent rules" means. Maybe this is it.

1                              x4

———   divided by   ———

x                              1

To divide by a fraction, invert the divisor and multiply.

1                                 1

———   multiplied by   ———

x                                  x4

1              1                 1                1                 1

———    ———   =   ———   =   ———   =   ———

x               x4               x5             (–2)5          –32

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Mar 8, 2021