7x+3=4x^2

Simple and best practice solution for 7x+3=4x^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 7x+3=4x^2 equation:


Simplifying
7x + 3 = 4x2

Reorder the terms:
3 + 7x = 4x2

Solving
3 + 7x = 4x2

Solving for variable 'x'.

Combine like terms: 4x2 + -4x2 = 0
3 + 7x + -4x2 = 0

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

Divide each side by '-4'.
-0.75 + -1.75x + x2 = 0

Move the constant term to the right:

Add '0.75' to each side of the equation.
-0.75 + -1.75x + 0.75 + x2 = 0 + 0.75

Reorder the terms:
-0.75 + 0.75 + -1.75x + x2 = 0 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + -1.75x + x2 = 0 + 0.75
-1.75x + x2 = 0 + 0.75

Combine like terms: 0 + 0.75 = 0.75
-1.75x + x2 = 0.75

The x term is -1.75x.  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.
-1.75x + 0.765625 + x2 = 0.75 + 0.765625

Reorder the terms:
0.765625 + -1.75x + x2 = 0.75 + 0.765625

Combine like terms: 0.75 + 0.765625 = 1.515625
0.765625 + -1.75x + x2 = 1.515625

Factor a perfect square on the left side:
(x + -0.875)(x + -0.875) = 1.515625

Calculate the square root of the right side: 1.231107225

Break this problem into two subproblems by setting 
(x + -0.875) equal to 1.231107225 and -1.231107225.

Subproblem 1

x + -0.875 = 1.231107225 Simplifying x + -0.875 = 1.231107225 Reorder the terms: -0.875 + x = 1.231107225 Solving -0.875 + x = 1.231107225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + x = 1.231107225 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + x = 1.231107225 + 0.875 x = 1.231107225 + 0.875 Combine like terms: 1.231107225 + 0.875 = 2.106107225 x = 2.106107225 Simplifying x = 2.106107225

Subproblem 2

x + -0.875 = -1.231107225 Simplifying x + -0.875 = -1.231107225 Reorder the terms: -0.875 + x = -1.231107225 Solving -0.875 + x = -1.231107225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + x = -1.231107225 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + x = -1.231107225 + 0.875 x = -1.231107225 + 0.875 Combine like terms: -1.231107225 + 0.875 = -0.356107225 x = -0.356107225 Simplifying x = -0.356107225

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.106107225, -0.356107225}

See similar equations:

| 3(7y-4)-11=5y+18 | | 3(3x+2)-2(x-3)=x+3 | | 7a+2b+5-5a-(-2)= | | -15x^3=-10x^2-40x | | (9+w)2=6+(6/6) | | 4+1x+(-10)-11= | | ((6x+7)/5)=((5x+1)/4)+1 | | 4x(-5)= | | 6y*4=18 | | (6x+7)/5=(5x+1)/4 | | -1a+-3a+15+5a-(-2)= | | 1x(-5)= | | 4.8x+56.1=21.3-6.8x | | X+21+10X=20+9X | | 8x(x-7)=(2x+9)(x-7) | | X+2/6=x-5/3 | | 7(x+2)-4=35 | | n/10-1=2 | | .5x-8=7+2x | | (X+2/6)=(x-5/3) | | 2=n/5-3 | | 9x+1=5x/3 | | 8c-8=3c-3 | | 6x+28=16x+92 | | 2x/x+3=-6/x+3-2 | | 5(c-5d^2)-2(6c-d^2)= | | 9=5+n/8 | | 4y+2(-3y+5)= | | 1/2x^2+4x-5 | | 3x-6=4y-8 | | 7=n/2+3 | | x/3+5=8 |

Equations solver categories