9x^2-7x+4=0

Simple and best practice solution for 9x^2-7x+4=0 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 9x^2-7x+4=0 equation:


Simplifying
9x2 + -7x + 4 = 0

Reorder the terms:
4 + -7x + 9x2 = 0

Solving
4 + -7x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
0.4444444444 + -0.7777777778x + x2 = 0

Move the constant term to the right:

Add '-0.4444444444' to each side of the equation.
0.4444444444 + -0.7777777778x + -0.4444444444 + x2 = 0 + -0.4444444444

Reorder the terms:
0.4444444444 + -0.4444444444 + -0.7777777778x + x2 = 0 + -0.4444444444

Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000
0.0000000000 + -0.7777777778x + x2 = 0 + -0.4444444444
-0.7777777778x + x2 = 0 + -0.4444444444

Combine like terms: 0 + -0.4444444444 = -0.4444444444
-0.7777777778x + x2 = -0.4444444444

The x term is -0.7777777778x.  Take half its coefficient (-0.3888888889).
Square it (0.1512345679) and add it to both sides.

Add '0.1512345679' to each side of the equation.
-0.7777777778x + 0.1512345679 + x2 = -0.4444444444 + 0.1512345679

Reorder the terms:
0.1512345679 + -0.7777777778x + x2 = -0.4444444444 + 0.1512345679

Combine like terms: -0.4444444444 + 0.1512345679 = -0.2932098765
0.1512345679 + -0.7777777778x + x2 = -0.2932098765

Factor a perfect square on the left side:
(x + -0.3888888889)(x + -0.3888888889) = -0.2932098765

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 4.5p=-6 | | (a^2+5a+13)/(a+2) | | .34(d+9)=-12 | | 1/4(x-30)=10 | | 2.6q-1.1-3.1q=-1.5q-1.3 | | 6d-1/2(2d-4)=-5/4(d+4) | | 22-6k=-5k | | -11x-12= | | 5+8+x=18 | | -276+(-276+2)+(-276+4)+(-276+6)=-276 | | 1/5(x-30)=1 | | 10n+10=2n | | 3k^5m^7+9k^9m^7-15k^5m^8=0 | | 2a+5a-8=13 | | 0=2x+36+6 | | 7(3-4q)-10(q-2)=19(5-2q) | | -10-10x-8= | | 7-4y=y+22 | | -27=3x-5 | | 42(3x+4)=-18x | | z/7=z/6-2 | | 4x+.5y=20 | | 15=-3(2n-1) | | 24x-8=5(4x+4) | | y/3+5=7/3 | | 6-(x-3)=-4 | | 3n+4=9x+1 | | 2x-2=2-2x | | 8p+12p=100 | | 4x+24x-2=7(4x-2) | | Y=2x+36+6 | | -5A+3+8A-4=9+3-1 |

Equations solver categories