49z^2-126z+81=0

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Solution for 49z^2-126z+81=0 equation:


Simplifying
49z2 + -126z + 81 = 0

Reorder the terms:
81 + -126z + 49z2 = 0

Solving
81 + -126z + 49z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(9 + -7z)(9 + -7z) = 0

Subproblem 1

Set the factor '(9 + -7z)' equal to zero and attempt to solve: Simplifying 9 + -7z = 0 Solving 9 + -7z = 0 Move all terms containing z to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -7z = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -7z = 0 + -9 -7z = 0 + -9 Combine like terms: 0 + -9 = -9 -7z = -9 Divide each side by '-7'. z = 1.285714286 Simplifying z = 1.285714286

Subproblem 2

Set the factor '(9 + -7z)' equal to zero and attempt to solve: Simplifying 9 + -7z = 0 Solving 9 + -7z = 0 Move all terms containing z to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -7z = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -7z = 0 + -9 -7z = 0 + -9 Combine like terms: 0 + -9 = -9 -7z = -9 Divide each side by '-7'. z = 1.285714286 Simplifying z = 1.285714286

Solution

z = {1.285714286, 1.285714286}

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