Question

find the value of 2x cube - 3x+ under root 5 when x is equal to minus 3
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Answer 1

Answer:

1st step:-2^3-3x+root5

2nd step:-8-(-3)+root5

3rd step:-8+9+root5

4th step:-17+root5

Answer 2

Answer:

e Cube Roots:

The 3rd root of 64, or 64 radical 3, or the cube root of 64 is written as [Math Processing Error]643=4.

The 3rd root of -64, or -64 radical 3, or the cube root of -64 is written as [Math Processing Error]−643=−4.

The cube root of 8 is written as [Math Processing Error]83=2.

The cube root of 10 is written as [Math Processing Error]103=2.154435.

The cube root of x is the same as x raised to the 1/3 power. Written as [Math Processing Error]x3=x13. The common definition of the cube root of a negative number is that 

(-x)1/3 = -(x1/3).[1] For example:

The cube root of -27 is written as [Math Processing Error]−273=−3.

The cube root of -8 is written as [Math Processing Error]−83=−2.

The cube root of -64 is written as [Math Processing Error]−643=−4.

Cube roots (for integer results 1 through 10)

Cube root of 1 is 1

Cube root of 8 is 2

Cube root of 27 is 3

Cube root of 64 is 4

Cube root of 125 is 5

Cube root of 216 is 6

Cube root of 343 is 7

Cube root of 512 is 8

Cube root of 729 is 9

Cube root of 1000 is 10

Step-by-step explanation:

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