4g^2-7g-4=0

Simple and best practice solution for 4g^2-7g-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 4g^2-7g-4=0 equation:


Simplifying
4g2 + -7g + -4 = 0

Reorder the terms:
-4 + -7g + 4g2 = 0

Solving
-4 + -7g + 4g2 = 0

Solving for variable 'g'.

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

Divide each side by '4'.
-1 + -1.75g + g2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -1.75g + 1 + g2 = 0 + 1

Reorder the terms:
-1 + 1 + -1.75g + g2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -1.75g + g2 = 0 + 1
-1.75g + g2 = 0 + 1

Combine like terms: 0 + 1 = 1
-1.75g + g2 = 1

The g term is -1.75g.  Take half its coefficient (-0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
-1.75g + 0.765625 + g2 = 1 + 0.765625

Reorder the terms:
0.765625 + -1.75g + g2 = 1 + 0.765625

Combine like terms: 1 + 0.765625 = 1.765625
0.765625 + -1.75g + g2 = 1.765625

Factor a perfect square on the left side:
(g + -0.875)(g + -0.875) = 1.765625

Calculate the square root of the right side: 1.328768227

Break this problem into two subproblems by setting 
(g + -0.875) equal to 1.328768227 and -1.328768227.

Subproblem 1

g + -0.875 = 1.328768227 Simplifying g + -0.875 = 1.328768227 Reorder the terms: -0.875 + g = 1.328768227 Solving -0.875 + g = 1.328768227 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + g = 1.328768227 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + g = 1.328768227 + 0.875 g = 1.328768227 + 0.875 Combine like terms: 1.328768227 + 0.875 = 2.203768227 g = 2.203768227 Simplifying g = 2.203768227

Subproblem 2

g + -0.875 = -1.328768227 Simplifying g + -0.875 = -1.328768227 Reorder the terms: -0.875 + g = -1.328768227 Solving -0.875 + g = -1.328768227 Solving for variable 'g'. Move all terms containing g to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + g = -1.328768227 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + g = -1.328768227 + 0.875 g = -1.328768227 + 0.875 Combine like terms: -1.328768227 + 0.875 = -0.453768227 g = -0.453768227 Simplifying g = -0.453768227

Solution

The solution to the problem is based on the solutions from the subproblems. g = {2.203768227, -0.453768227}

See similar equations:

| .3x+2x=.25+3.5 | | 6(x-2)+5=6x-6 | | 30=-5c(6n+6) | | 2/3*x-1=16 | | 8(x-7)+11=8x-45 | | 3=y/9.6 | | x-19=2x+16 | | 4(5x+2y)= | | sin^3x-4sinx=0 | | 19+2.50h=9+3.75h | | (19x-7)+(10-9x)= | | 100x-3y=400 | | y=-9x+-2 | | 1/22x100 | | c/5-4=-9 | | 12.6/3.5 | | 3(2x-6)+10=4x-1 | | ln(e^18x)=9 | | 26=1/5x | | 9x+4x-6x-5=37 | | 74+20+x=180 | | 98+27+x=180 | | x+.35x=721000 | | 50+41+x=180 | | 45+56+x=180 | | 102+48+x=180 | | (X-1)(x-5)=36 | | 4v+9=7v-6 | | 120+36=-12x | | 15/75x100= | | -16x^2-4x+382=0 | | 2(x+4)=2x+12 |

Equations solver categories