4x(x-1)-(2x+5)(2x-5)=1

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Solution for 4x(x-1)-(2x+5)(2x-5)=1 equation:


Simplifying
4x(x + -1) + -1(2x + 5)(2x + -5) = 1

Reorder the terms:
4x(-1 + x) + -1(2x + 5)(2x + -5) = 1
(-1 * 4x + x * 4x) + -1(2x + 5)(2x + -5) = 1
(-4x + 4x2) + -1(2x + 5)(2x + -5) = 1

Reorder the terms:
-4x + 4x2 + -1(5 + 2x)(2x + -5) = 1

Reorder the terms:
-4x + 4x2 + -1(5 + 2x)(-5 + 2x) = 1

Multiply (5 + 2x) * (-5 + 2x)
-4x + 4x2 + -1(5(-5 + 2x) + 2x * (-5 + 2x)) = 1
-4x + 4x2 + -1((-5 * 5 + 2x * 5) + 2x * (-5 + 2x)) = 1
-4x + 4x2 + -1((-25 + 10x) + 2x * (-5 + 2x)) = 1
-4x + 4x2 + -1(-25 + 10x + (-5 * 2x + 2x * 2x)) = 1
-4x + 4x2 + -1(-25 + 10x + (-10x + 4x2)) = 1

Combine like terms: 10x + -10x = 0
-4x + 4x2 + -1(-25 + 0 + 4x2) = 1
-4x + 4x2 + -1(-25 + 4x2) = 1
-4x + 4x2 + (-25 * -1 + 4x2 * -1) = 1
-4x + 4x2 + (25 + -4x2) = 1

Reorder the terms:
25 + -4x + 4x2 + -4x2 = 1

Combine like terms: 4x2 + -4x2 = 0
25 + -4x + 0 = 1
25 + -4x = 1

Solving
25 + -4x = 1

Solving for variable 'x'.

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

Add '-25' to each side of the equation.
25 + -25 + -4x = 1 + -25

Combine like terms: 25 + -25 = 0
0 + -4x = 1 + -25
-4x = 1 + -25

Combine like terms: 1 + -25 = -24
-4x = -24

Divide each side by '-4'.
x = 6

Simplifying
x = 6

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