(3x^2+7x+9)-(7x-8)=

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Solution for (3x^2+7x+9)-(7x-8)= equation:


Simplifying
(3x2 + 7x + 9) + -1(7x + -8) = 0

Reorder the terms:
(9 + 7x + 3x2) + -1(7x + -8) = 0

Remove parenthesis around (9 + 7x + 3x2)
9 + 7x + 3x2 + -1(7x + -8) = 0

Reorder the terms:
9 + 7x + 3x2 + -1(-8 + 7x) = 0
9 + 7x + 3x2 + (-8 * -1 + 7x * -1) = 0
9 + 7x + 3x2 + (8 + -7x) = 0

Reorder the terms:
9 + 8 + 7x + -7x + 3x2 = 0

Combine like terms: 9 + 8 = 17
17 + 7x + -7x + 3x2 = 0

Combine like terms: 7x + -7x = 0
17 + 0 + 3x2 = 0
17 + 3x2 = 0

Solving
17 + 3x2 = 0

Solving for variable 'x'.

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

Add '-17' to each side of the equation.
17 + -17 + 3x2 = 0 + -17

Combine like terms: 17 + -17 = 0
0 + 3x2 = 0 + -17
3x2 = 0 + -17

Combine like terms: 0 + -17 = -17
3x2 = -17

Divide each side by '3'.
x2 = -5.666666667

Simplifying
x2 = -5.666666667

Reorder the terms:
5.666666667 + x2 = -5.666666667 + 5.666666667

Combine like terms: -5.666666667 + 5.666666667 = 0.000000000
5.666666667 + x2 = 0.000000000

The solution to this equation could not be determined.

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