-4= -4x to the third power - 4x to the second power.

x = 0.754878...

Step-by-step explanation:

Hi there! I'm glad I was able to help you solve this math problem!

First, you'll want to subtract -4x^3 - 4x^2 from each side of the equation. This cancels out the right side of the problem, leaving us with a problem that equals zero.

-4 - (-4x^3 - 4x^2) = -4x^3 - 4x^2 - (-4x^3 - 4x^2)

4x^3 + 4x^2 - 4 = 0

Next, we use the cubic formula to solve for x. You can use a calculator to do this part for you!

x = 0.754878... is your answer.

I hope this helped you! Leave a comment below if you have any other questions! :)

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13