4d^2-28d+49=0

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


Simplifying
4d2 + -28d + 49 = 0

Reorder the terms:
49 + -28d + 4d2 = 0

Solving
49 + -28d + 4d2 = 0

Solving for variable 'd'.

Factor a trinomial.
(7 + -2d)(7 + -2d) = 0

Subproblem 1

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

Subproblem 2

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

Solution

d = {3.5, 3.5}

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