(7x^2+5)-(2x^2-5)=

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Solution for (7x^2+5)-(2x^2-5)= equation:


Simplifying
(7x2 + 5) + -1(2x2 + -5) = 0

Reorder the terms:
(5 + 7x2) + -1(2x2 + -5) = 0

Remove parenthesis around (5 + 7x2)
5 + 7x2 + -1(2x2 + -5) = 0

Reorder the terms:
5 + 7x2 + -1(-5 + 2x2) = 0
5 + 7x2 + (-5 * -1 + 2x2 * -1) = 0
5 + 7x2 + (5 + -2x2) = 0

Reorder the terms:
5 + 5 + 7x2 + -2x2 = 0

Combine like terms: 5 + 5 = 10
10 + 7x2 + -2x2 = 0

Combine like terms: 7x2 + -2x2 = 5x2
10 + 5x2 = 0

Solving
10 + 5x2 = 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 + 5x2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 5x2 = 0 + -10
5x2 = 0 + -10

Combine like terms: 0 + -10 = -10
5x2 = -10

Divide each side by '5'.
x2 = -2

Simplifying
x2 = -2

Reorder the terms:
2 + x2 = -2 + 2

Combine like terms: -2 + 2 = 0
2 + x2 = 0

The solution to this equation could not be determined.

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