(x^2-1)-(8x^2+9)=0

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Solution for (x^2-1)-(8x^2+9)=0 equation:


Simplifying
(x2 + -1) + -1(8x2 + 9) = 0

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

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

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

Reorder the terms:
-1 + -9 + x2 + -8x2 = 0

Combine like terms: -1 + -9 = -10
-10 + x2 + -8x2 = 0

Combine like terms: x2 + -8x2 = -7x2
-10 + -7x2 = 0

Solving
-10 + -7x2 = 0

Solving for variable 'x'.

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

Add '10' to each side of the equation.
-10 + 10 + -7x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -7x2 = 0 + 10
-7x2 = 0 + 10

Combine like terms: 0 + 10 = 10
-7x2 = 10

Divide each side by '-7'.
x2 = -1.428571429

Simplifying
x2 = -1.428571429

Reorder the terms:
1.428571429 + x2 = -1.428571429 + 1.428571429

Combine like terms: -1.428571429 + 1.428571429 = 0.000000000
1.428571429 + x2 = 0.000000000

The solution to this equation could not be determined.

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