5x^2-2x+7=

Simple and best practice solution for 5x^2-2x+7= 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 5x^2-2x+7= equation:


Simplifying
5x2 + -2x + 7 = 0

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

Solving
7 + -2x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
1.4 + -0.4x + x2 = 0

Move the constant term to the right:

Add '-1.4' to each side of the equation.
1.4 + -0.4x + -1.4 + x2 = 0 + -1.4

Reorder the terms:
1.4 + -1.4 + -0.4x + x2 = 0 + -1.4

Combine like terms: 1.4 + -1.4 = 0.0
0.0 + -0.4x + x2 = 0 + -1.4
-0.4x + x2 = 0 + -1.4

Combine like terms: 0 + -1.4 = -1.4
-0.4x + x2 = -1.4

The x term is -0.4x.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4x + 0.04 + x2 = -1.4 + 0.04

Reorder the terms:
0.04 + -0.4x + x2 = -1.4 + 0.04

Combine like terms: -1.4 + 0.04 = -1.36
0.04 + -0.4x + x2 = -1.36

Factor a perfect square on the left side:
(x + -0.2)(x + -0.2) = -1.36

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| (x^2-9)= | | log4/3x=2 | | 7-2x+3x=5x+2 | | 5m+-1mx=2+-1y | | (256x*256x)+(135x*135x)=31*31 | | 2(5-2x)=2(5x+1) | | (256x*256x)+(135x*135x)=34*31 | | 6x-7=4x-39 | | 4x+2y-6x^2-xy+y^2=0 | | 3x^2y^2-12x^3y^2+15x^2y^2z^2= | | d=20/2(20-3) | | (27x*27x)+(64x*64x)=34*34 | | 3x=-9/5 | | 2=6+y | | 3/100=m/71/2 | | 0.46x/0.19=31.1 | | 5/65=g/4 | | y+4/3=-1 | | 5=0.5x/7 | | (27*27)+x^2+54x+(64*64)+x^2+128x=34*34 | | 8=0.5x/7 | | (2x-3)(3x-4)-(x-13)(x-4)=4 | | X-5/14=9/2 | | X-3/14=4/7 | | 5=a/6 | | 6x/5-3=9 | | 8x/3-4=12 | | 8=1.2x/6 | | 8=1.2/6 | | 5=7-3x | | 8x=8x-5 | | -4w^6x^5(7x^4-3w+6)= |

Equations solver categories