(5x-7)(2x+1)-10x(x-4)=0

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Solution for (5x-7)(2x+1)-10x(x-4)=0 equation:


Simplifying
(5x + -7)(2x + 1) + -10x(x + -4) = 0

Reorder the terms:
(-7 + 5x)(2x + 1) + -10x(x + -4) = 0

Reorder the terms:
(-7 + 5x)(1 + 2x) + -10x(x + -4) = 0

Multiply (-7 + 5x) * (1 + 2x)
(-7(1 + 2x) + 5x * (1 + 2x)) + -10x(x + -4) = 0
((1 * -7 + 2x * -7) + 5x * (1 + 2x)) + -10x(x + -4) = 0
((-7 + -14x) + 5x * (1 + 2x)) + -10x(x + -4) = 0
(-7 + -14x + (1 * 5x + 2x * 5x)) + -10x(x + -4) = 0
(-7 + -14x + (5x + 10x2)) + -10x(x + -4) = 0

Combine like terms: -14x + 5x = -9x
(-7 + -9x + 10x2) + -10x(x + -4) = 0

Reorder the terms:
-7 + -9x + 10x2 + -10x(-4 + x) = 0
-7 + -9x + 10x2 + (-4 * -10x + x * -10x) = 0
-7 + -9x + 10x2 + (40x + -10x2) = 0

Reorder the terms:
-7 + -9x + 40x + 10x2 + -10x2 = 0

Combine like terms: -9x + 40x = 31x
-7 + 31x + 10x2 + -10x2 = 0

Combine like terms: 10x2 + -10x2 = 0
-7 + 31x + 0 = 0
-7 + 31x = 0

Solving
-7 + 31x = 0

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + 31x = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 31x = 0 + 7
31x = 0 + 7

Combine like terms: 0 + 7 = 7
31x = 7

Divide each side by '31'.
x = 0.2258064516

Simplifying
x = 0.2258064516

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