2A^2-13A=7

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Solution for 2A^2-13A=7 equation:


Simplifying
2A2 + -13A = 7

Reorder the terms:
-13A + 2A2 = 7

Solving
-13A + 2A2 = 7

Solving for variable 'A'.

Reorder the terms:
-7 + -13A + 2A2 = 7 + -7

Combine like terms: 7 + -7 = 0
-7 + -13A + 2A2 = 0

Factor a trinomial.
(-1 + -2A)(7 + -1A) = 0

Subproblem 1

Set the factor '(-1 + -2A)' equal to zero and attempt to solve: Simplifying -1 + -2A = 0 Solving -1 + -2A = 0 Move all terms containing A to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -2A = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2A = 0 + 1 -2A = 0 + 1 Combine like terms: 0 + 1 = 1 -2A = 1 Divide each side by '-2'. A = -0.5 Simplifying A = -0.5

Subproblem 2

Set the factor '(7 + -1A)' equal to zero and attempt to solve: Simplifying 7 + -1A = 0 Solving 7 + -1A = 0 Move all terms containing A to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1A = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1A = 0 + -7 -1A = 0 + -7 Combine like terms: 0 + -7 = -7 -1A = -7 Divide each side by '-1'. A = 7 Simplifying A = 7

Solution

A = {-0.5, 7}

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