4r^2-49=

Solution for 4r^2-49= equation:

Simplifying
4r2 + -49 = 0

Reorder the terms:
-49 + 4r2 = 0

Solving
-49 + 4r2 = 0

Solving for variable 'r'.

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

Add '49' to each side of the equation.
-49 + 49 + 4r2 = 0 + 49

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

Combine like terms: 0 + 49 = 49
4r2 = 49

Divide each side by '4'.
r2 = 12.25

Simplifying
r2 = 12.25

Take the square root of each side:
r = {-3.5, 3.5}