(2x+5)(2x-5)=811

Simple and best practice solution for (2x+5)(2x-5)=811 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for (2x+5)(2x-5)=811 equation: 


Simplifying
(2x + 5)(2x + -5) = 811

Reorder the terms:
(5 + 2x)(2x + -5) = 811

Reorder the terms:
(5 + 2x)(-5 + 2x) = 811

Multiply (5 + 2x) * (-5 + 2x)
(5(-5 + 2x) + 2x * (-5 + 2x)) = 811
((-5 * 5 + 2x * 5) + 2x * (-5 + 2x)) = 811
((-25 + 10x) + 2x * (-5 + 2x)) = 811
(-25 + 10x + (-5 * 2x + 2x * 2x)) = 811
(-25 + 10x + (-10x + 4x2)) = 811

Combine like terms: 10x + -10x = 0
(-25 + 0 + 4x2) = 811
(-25 + 4x2) = 811

Solving
-25 + 4x2 = 811

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 + 4x2 = 811 + 25

Combine like terms: -25 + 25 = 0
0 + 4x2 = 811 + 25
4x2 = 811 + 25

Combine like terms: 811 + 25 = 836
4x2 = 836

Divide each side by '4'.
x2 = 209

Simplifying
x2 = 209

Take the square root of each side:
x = {-14.456832295, 14.456832295}

See similar equations:

| -12+13k-10k+15= | | B=2940+-0.6C | | 3.5/6.2=7.35/b | | 54+83n-67= | | .5(6x-8)=41 | | 3+4=-27 | | -(7y+2)-(-6y-8)=2 | | 3/2+3y=6y-3/10 | | 4x+4=-6+2x+22 | | 10-2/5x=10/3x+8/12 | | 147=.03C+.05B | | -2(4x-1)-2x=5-9x | | -(7y+2)-(-6-8)=2 | | 7x-x^2+2andx=-4 | | x(7x+4)=2x^2-8x+32 | | (2w+(7/4))=((w+2)/4)-2 | | .5(p-16)=13 | | 0.09x+5=365 | | 14=2+-8 | | -5*-3*-1*3= | | x/6+3=-15 | | -2(-2-x)=26 | | (c+9)2=64 | | 3-5m+2m=-2-2(1-m) | | 80/-4+25= | | -5(8x-5)-5=20+x | | 124*12= | | -3x+2=-2(3x+5) | | -4(6+7x)=-24 | | 4.3*d+7.5=5.8*d | | -2(4x-7)+8=-8x+22 | | 22=42+3 |

Equations solver categories