2a^2-7a=4

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Solution for 2a^2-7a=4 equation:


Simplifying
2a2 + -7a = 4

Reorder the terms:
-7a + 2a2 = 4

Solving
-7a + 2a2 = 4

Solving for variable 'a'.

Reorder the terms:
-4 + -7a + 2a2 = 4 + -4

Combine like terms: 4 + -4 = 0
-4 + -7a + 2a2 = 0

Factor a trinomial.
(-1 + -2a)(4 + -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 '(4 + -1a)' equal to zero and attempt to solve: Simplifying 4 + -1a = 0 Solving 4 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1a = 0 + -4 -1a = 0 + -4 Combine like terms: 0 + -4 = -4 -1a = -4 Divide each side by '-1'. a = 4 Simplifying a = 4

Solution

a = {-0.5, 4}

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