2z^2=30+7z

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Solution for 2z^2=30+7z equation:


Simplifying
2z2 = 30 + 7z

Solving
2z2 = 30 + 7z

Solving for variable 'z'.

Reorder the terms:
-30 + -7z + 2z2 = 30 + 7z + -30 + -7z

Reorder the terms:
-30 + -7z + 2z2 = 30 + -30 + 7z + -7z

Combine like terms: 30 + -30 = 0
-30 + -7z + 2z2 = 0 + 7z + -7z
-30 + -7z + 2z2 = 7z + -7z

Combine like terms: 7z + -7z = 0
-30 + -7z + 2z2 = 0

Factor a trinomial.
(-5 + -2z)(6 + -1z) = 0

Subproblem 1

Set the factor '(-5 + -2z)' equal to zero and attempt to solve: Simplifying -5 + -2z = 0 Solving -5 + -2z = 0 Move all terms containing z to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -2z = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -2z = 0 + 5 -2z = 0 + 5 Combine like terms: 0 + 5 = 5 -2z = 5 Divide each side by '-2'. z = -2.5 Simplifying z = -2.5

Subproblem 2

Set the factor '(6 + -1z)' equal to zero and attempt to solve: Simplifying 6 + -1z = 0 Solving 6 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1z = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1z = 0 + -6 -1z = 0 + -6 Combine like terms: 0 + -6 = -6 -1z = -6 Divide each side by '-1'. z = 6 Simplifying z = 6

Solution

z = {-2.5, 6}

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