4r^2+28r=-49

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


Simplifying
4r2 + 28r = -49

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

Solving
28r + 4r2 = -49

Solving for variable 'r'.

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

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

Factor a trinomial.
(7 + 2r)(7 + 2r) = 0

Subproblem 1

Set the factor '(7 + 2r)' equal to zero and attempt to solve: Simplifying 7 + 2r = 0 Solving 7 + 2r = 0 Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 2r = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2r = 0 + -7 2r = 0 + -7 Combine like terms: 0 + -7 = -7 2r = -7 Divide each side by '2'. r = -3.5 Simplifying r = -3.5

Subproblem 2

Set the factor '(7 + 2r)' equal to zero and attempt to solve: Simplifying 7 + 2r = 0 Solving 7 + 2r = 0 Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 2r = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2r = 0 + -7 2r = 0 + -7 Combine like terms: 0 + -7 = -7 2r = -7 Divide each side by '2'. r = -3.5 Simplifying r = -3.5

Solution

r = {-3.5, -3.5}

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