(4a^2-3a+4)-(3a^2-7a+6)=

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Solution for (4a^2-3a+4)-(3a^2-7a+6)= equation:


Simplifying
(4a2 + -3a + 4) + -1(3a2 + -7a + 6) = 0

Reorder the terms:
(4 + -3a + 4a2) + -1(3a2 + -7a + 6) = 0

Remove parenthesis around (4 + -3a + 4a2)
4 + -3a + 4a2 + -1(3a2 + -7a + 6) = 0

Reorder the terms:
4 + -3a + 4a2 + -1(6 + -7a + 3a2) = 0
4 + -3a + 4a2 + (6 * -1 + -7a * -1 + 3a2 * -1) = 0
4 + -3a + 4a2 + (-6 + 7a + -3a2) = 0

Reorder the terms:
4 + -6 + -3a + 7a + 4a2 + -3a2 = 0

Combine like terms: 4 + -6 = -2
-2 + -3a + 7a + 4a2 + -3a2 = 0

Combine like terms: -3a + 7a = 4a
-2 + 4a + 4a2 + -3a2 = 0

Combine like terms: 4a2 + -3a2 = 1a2
-2 + 4a + 1a2 = 0

Solving
-2 + 4a + 1a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 4a + 2 + a2 = 0 + 2

Reorder the terms:
-2 + 2 + 4a + a2 = 0 + 2

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

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

The a term is 4a.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4a + 4 + a2 = 2 + 4

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

Combine like terms: 2 + 4 = 6
4 + 4a + a2 = 6

Factor a perfect square on the left side:
(a + 2)(a + 2) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(a + 2) equal to 2.449489743 and -2.449489743.

Subproblem 1

a + 2 = 2.449489743 Simplifying a + 2 = 2.449489743 Reorder the terms: 2 + a = 2.449489743 Solving 2 + a = 2.449489743 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + a = 2.449489743 + -2 Combine like terms: 2 + -2 = 0 0 + a = 2.449489743 + -2 a = 2.449489743 + -2 Combine like terms: 2.449489743 + -2 = 0.449489743 a = 0.449489743 Simplifying a = 0.449489743

Subproblem 2

a + 2 = -2.449489743 Simplifying a + 2 = -2.449489743 Reorder the terms: 2 + a = -2.449489743 Solving 2 + a = -2.449489743 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + a = -2.449489743 + -2 Combine like terms: 2 + -2 = 0 0 + a = -2.449489743 + -2 a = -2.449489743 + -2 Combine like terms: -2.449489743 + -2 = -4.449489743 a = -4.449489743 Simplifying a = -4.449489743

Solution

The solution to the problem is based on the solutions from the subproblems. a = {0.449489743, -4.449489743}

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