7a^2=65a-18

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Solution for 7a^2=65a-18 equation:


Simplifying
7a2 = 65a + -18

Reorder the terms:
7a2 = -18 + 65a

Solving
7a2 = -18 + 65a

Solving for variable 'a'.

Reorder the terms:
18 + -65a + 7a2 = -18 + 65a + 18 + -65a

Reorder the terms:
18 + -65a + 7a2 = -18 + 18 + 65a + -65a

Combine like terms: -18 + 18 = 0
18 + -65a + 7a2 = 0 + 65a + -65a
18 + -65a + 7a2 = 65a + -65a

Combine like terms: 65a + -65a = 0
18 + -65a + 7a2 = 0

Factor a trinomial.
(2 + -7a)(9 + -1a) = 0

Subproblem 1

Set the factor '(2 + -7a)' equal to zero and attempt to solve: Simplifying 2 + -7a = 0 Solving 2 + -7a = 0 Move all terms containing a to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -7a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -7a = 0 + -2 -7a = 0 + -2 Combine like terms: 0 + -2 = -2 -7a = -2 Divide each side by '-7'. a = 0.2857142857 Simplifying a = 0.2857142857

Subproblem 2

Set the factor '(9 + -1a)' equal to zero and attempt to solve: Simplifying 9 + -1a = 0 Solving 9 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1a = 0 + -9 -1a = 0 + -9 Combine like terms: 0 + -9 = -9 -1a = -9 Divide each side by '-1'. a = 9 Simplifying a = 9

Solution

a = {0.2857142857, 9}

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