7z^2+12z=64

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Solution for 7z^2+12z=64 equation:


Simplifying
7z2 + 12z = 64

Reorder the terms:
12z + 7z2 = 64

Solving
12z + 7z2 = 64

Solving for variable 'z'.

Reorder the terms:
-64 + 12z + 7z2 = 64 + -64

Combine like terms: 64 + -64 = 0
-64 + 12z + 7z2 = 0

Factor a trinomial.
(-4 + -1z)(16 + -7z) = 0

Subproblem 1

Set the factor '(-4 + -1z)' equal to zero and attempt to solve: Simplifying -4 + -1z = 0 Solving -4 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1z = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1z = 0 + 4 -1z = 0 + 4 Combine like terms: 0 + 4 = 4 -1z = 4 Divide each side by '-1'. z = -4 Simplifying z = -4

Subproblem 2

Set the factor '(16 + -7z)' equal to zero and attempt to solve: Simplifying 16 + -7z = 0 Solving 16 + -7z = 0 Move all terms containing z to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -16 + -7z = 0 + -16 Combine like terms: 16 + -16 = 0 0 + -7z = 0 + -16 -7z = 0 + -16 Combine like terms: 0 + -16 = -16 -7z = -16 Divide each side by '-7'. z = 2.285714286 Simplifying z = 2.285714286

Solution

z = {-4, 2.285714286}

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