4g^2-7g-5=0

Simple and best practice solution for 4g^2-7g-5=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-5=0 equation:


Simplifying
4g2 + -7g + -5 = 0

Reorder the terms:
-5 + -7g + 4g2 = 0

Solving
-5 + -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'.
-1.25 + -1.75g + g2 = 0

Move the constant term to the right:

Add '1.25' to each side of the equation.
-1.25 + -1.75g + 1.25 + g2 = 0 + 1.25

Reorder the terms:
-1.25 + 1.25 + -1.75g + g2 = 0 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + -1.75g + g2 = 0 + 1.25
-1.75g + g2 = 0 + 1.25

Combine like terms: 0 + 1.25 = 1.25
-1.75g + g2 = 1.25

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 = 1.25 + 0.765625

Reorder the terms:
0.765625 + -1.75g + g2 = 1.25 + 0.765625

Combine like terms: 1.25 + 0.765625 = 2.015625
0.765625 + -1.75g + g2 = 2.015625

Factor a perfect square on the left side:
(g + -0.875)(g + -0.875) = 2.015625

Calculate the square root of the right side: 1.419727086

Break this problem into two subproblems by setting 
(g + -0.875) equal to 1.419727086 and -1.419727086.

Subproblem 1

g + -0.875 = 1.419727086 Simplifying g + -0.875 = 1.419727086 Reorder the terms: -0.875 + g = 1.419727086 Solving -0.875 + g = 1.419727086 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 = 1.419727086 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + g = 1.419727086 + 0.875 g = 1.419727086 + 0.875 Combine like terms: 1.419727086 + 0.875 = 2.294727086 g = 2.294727086 Simplifying g = 2.294727086

Subproblem 2

g + -0.875 = -1.419727086 Simplifying g + -0.875 = -1.419727086 Reorder the terms: -0.875 + g = -1.419727086 Solving -0.875 + g = -1.419727086 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 = -1.419727086 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + g = -1.419727086 + 0.875 g = -1.419727086 + 0.875 Combine like terms: -1.419727086 + 0.875 = -0.544727086 g = -0.544727086 Simplifying g = -0.544727086

Solution

The solution to the problem is based on the solutions from the subproblems. g = {2.294727086, -0.544727086}

See similar equations:

| x^2+x+2.5=1.5 | | -2*1=-4 | | (15)(15+3x)=(20)(20+x) | | Log[2](7x+3)=1 | | -2*1+y=4 | | 5x+21=120 | | 5x^3=265 | | -3x+2*3=6 | | 7x-10=162 | | 50=100-k | | 2*4+y=2 | | 9/2x=5/8 | | 56/p=8/5 | | 7y/11-1/22=1/22 | | 13x-1=z | | 6x^4+5x^2-21=0 | | -15x+6=-3(5x-2) | | h(t)=16t^2+92t | | 4x+58=67 | | 20u^3v^3-5u^6v^2y^9=0 | | (8)(8+[x+3])=(10)(10+[x-3]) | | 3*-.75+.375y+2y=4 | | 5-11t=7(5+2t) | | 0=12x^2+132x+216 | | 4x^2+66x-236=0 | | a-a=44 | | 5u^9v^9+25u^2v^4x^3=0 | | y=-9cot(2/3x) | | -4(6-X)=.8(X+18) | | X/30=90/18 | | Y=1.5*-4+3 | | .10(X+131)=-2(2-X) |

Equations solver categories