2x-7-8x^2=

Simple and best practice solution for 2x-7-8x^2= 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-7-8x^2= equation:


Simplifying
2x + -7 + -8x2 = 0

Reorder the terms:
-7 + 2x + -8x2 = 0

Solving
-7 + 2x + -8x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
0.875 + -0.25x + x2 = 0

Move the constant term to the right:

Add '-0.875' to each side of the equation.
0.875 + -0.25x + -0.875 + x2 = 0 + -0.875

Reorder the terms:
0.875 + -0.875 + -0.25x + x2 = 0 + -0.875

Combine like terms: 0.875 + -0.875 = 0.000
0.000 + -0.25x + x2 = 0 + -0.875
-0.25x + x2 = 0 + -0.875

Combine like terms: 0 + -0.875 = -0.875
-0.25x + x2 = -0.875

The x term is -0.25x.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25x + 0.015625 + x2 = -0.875 + 0.015625

Reorder the terms:
0.015625 + -0.25x + x2 = -0.875 + 0.015625

Combine like terms: -0.875 + 0.015625 = -0.859375
0.015625 + -0.25x + x2 = -0.859375

Factor a perfect square on the left side:
(x + -0.125)(x + -0.125) = -0.859375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 7x+7+5y=14 | | -7(x-7)-6=99 | | 4x-3=4x-5(fog)(2) | | 4(2n+1)=9(9n+7)+5 | | -2x-(3x+10)=4x-35 | | 2-1+2x=8 | | 10x-3=2x | | 23x-45=115 | | 7=2.5ln(x) | | 12x(-15-(-22))= | | (-15)x=-15 | | 7=2.5lnx | | 2w+12+2l=40 | | 34=5+2 | | -3(2m-1)+2m=11+4m | | (4-9i)-1=x-(2+yi) | | 5(y+3)+y=3(y+5)-2 | | 6g-(-20+16g)=1 | | 5(2+w)=3(2w-1)-2(4-3w) | | 32-4(2w+1)=8u-4(8+w) | | .019y+0.09(y+3000)=1390 | | 8(1+8r)=-12(-5r-6) | | (x^10)-(6x^5)+9=0 | | H(x)=x-3 | | -x-8-11x+32=0 | | 7x-29=-29 | | -3(2m-1)+2m=11 | | -20-(w-4)=3w | | 4x^3-28x+24= | | 4x*(x^2-1)= | | 5(w+2)-3w=18 | | 42=13x+3 |

Equations solver categories