3a^2-1=(a+1)(3a+2)

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Solution for 3a^2-1=(a+1)(3a+2) equation:


Simplifying
3a2 + -1 = (a + 1)(3a + 2)

Reorder the terms:
-1 + 3a2 = (a + 1)(3a + 2)

Reorder the terms:
-1 + 3a2 = (1 + a)(3a + 2)

Reorder the terms:
-1 + 3a2 = (1 + a)(2 + 3a)

Multiply (1 + a) * (2 + 3a)
-1 + 3a2 = (1(2 + 3a) + a(2 + 3a))
-1 + 3a2 = ((2 * 1 + 3a * 1) + a(2 + 3a))
-1 + 3a2 = ((2 + 3a) + a(2 + 3a))
-1 + 3a2 = (2 + 3a + (2 * a + 3a * a))
-1 + 3a2 = (2 + 3a + (2a + 3a2))

Combine like terms: 3a + 2a = 5a
-1 + 3a2 = (2 + 5a + 3a2)

Add '-3a2' to each side of the equation.
-1 + 3a2 + -3a2 = 2 + 5a + 3a2 + -3a2

Combine like terms: 3a2 + -3a2 = 0
-1 + 0 = 2 + 5a + 3a2 + -3a2
-1 = 2 + 5a + 3a2 + -3a2

Combine like terms: 3a2 + -3a2 = 0
-1 = 2 + 5a + 0
-1 = 2 + 5a

Solving
-1 = 2 + 5a

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-5a' to each side of the equation.
-1 + -5a = 2 + 5a + -5a

Combine like terms: 5a + -5a = 0
-1 + -5a = 2 + 0
-1 + -5a = 2

Add '1' to each side of the equation.
-1 + 1 + -5a = 2 + 1

Combine like terms: -1 + 1 = 0
0 + -5a = 2 + 1
-5a = 2 + 1

Combine like terms: 2 + 1 = 3
-5a = 3

Divide each side by '-5'.
a = -0.6

Simplifying
a = -0.6

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