0=4r^2-28+49

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Solution for 0=4r^2-28+49 equation:


Simplifying
0 = 4r2 + -28 + 49

Reorder the terms:
0 = -28 + 49 + 4r2

Combine like terms: -28 + 49 = 21
0 = 21 + 4r2

Solving
0 = 21 + 4r2

Solving for variable 'r'.

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

Add '-4r2' to each side of the equation.
0 + -4r2 = 21 + 4r2 + -4r2
Remove the zero:
-4r2 = 21 + 4r2 + -4r2

Combine like terms: 4r2 + -4r2 = 0
-4r2 = 21 + 0
-4r2 = 21

Divide each side by '-4'.
r2 = -5.25

Simplifying
r2 = -5.25

Reorder the terms:
5.25 + r2 = -5.25 + 5.25

Combine like terms: -5.25 + 5.25 = 0.00
5.25 + r2 = 0.00

The solution to this equation could not be determined.

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