13=0.005x^2+5

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Solution for 13=0.005x^2+5 equation: 


Simplifying
13 = 0.005x2 + 5

Reorder the terms:
13 = 5 + 0.005x2

Solving
13 = 5 + 0.005x2

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-0.005x2' to each side of the equation.
13 + -0.005x2 = 5 + 0.005x2 + -0.005x2

Combine like terms: 0.005x2 + -0.005x2 = 0.000
13 + -0.005x2 = 5 + 0.000
13 + -0.005x2 = 5

Add '-13' to each side of the equation.
13 + -13 + -0.005x2 = 5 + -13

Combine like terms: 13 + -13 = 0
0 + -0.005x2 = 5 + -13
-0.005x2 = 5 + -13

Combine like terms: 5 + -13 = -8
-0.005x2 = -8

Divide each side by '-0.005'.
x2 = 1600

Simplifying
x2 = 1600

Take the square root of each side:
x = {-40, 40}

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