5z(4z-3)-7z(4z+4)=

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Solution for 5z(4z-3)-7z(4z+4)= equation:


Simplifying
5z(4z + -3) + -7z(4z + 4) = 0

Reorder the terms:
5z(-3 + 4z) + -7z(4z + 4) = 0
(-3 * 5z + 4z * 5z) + -7z(4z + 4) = 0
(-15z + 20z2) + -7z(4z + 4) = 0

Reorder the terms:
-15z + 20z2 + -7z(4 + 4z) = 0
-15z + 20z2 + (4 * -7z + 4z * -7z) = 0
-15z + 20z2 + (-28z + -28z2) = 0

Reorder the terms:
-15z + -28z + 20z2 + -28z2 = 0

Combine like terms: -15z + -28z = -43z
-43z + 20z2 + -28z2 = 0

Combine like terms: 20z2 + -28z2 = -8z2
-43z + -8z2 = 0

Solving
-43z + -8z2 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), '-1z'.
-1z(43 + 8z) = 0

Ignore the factor -1.

Subproblem 1

Set the factor 'z' equal to zero and attempt to solve: Simplifying z = 0 Solving z = 0 Move all terms containing z to the left, all other terms to the right. Simplifying z = 0

Subproblem 2

Set the factor '(43 + 8z)' equal to zero and attempt to solve: Simplifying 43 + 8z = 0 Solving 43 + 8z = 0 Move all terms containing z to the left, all other terms to the right. Add '-43' to each side of the equation. 43 + -43 + 8z = 0 + -43 Combine like terms: 43 + -43 = 0 0 + 8z = 0 + -43 8z = 0 + -43 Combine like terms: 0 + -43 = -43 8z = -43 Divide each side by '8'. z = -5.375 Simplifying z = -5.375

Solution

z = {0, -5.375}

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