4x^2=3-7x

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


Simplifying
4x2 = 3 + -7x

Solving
4x2 = 3 + -7x

Solving for variable 'x'.

Reorder the terms:
-3 + 7x + 4x2 = 3 + -7x + -3 + 7x

Reorder the terms:
-3 + 7x + 4x2 = 3 + -3 + -7x + 7x

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

Combine like terms: -7x + 7x = 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 = 0.356107225 x = 0.356107225 Simplifying x = 0.356107225

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 = -2.106107225 x = -2.106107225 Simplifying x = -2.106107225

Solution

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

See similar equations:

| (27x)^2/3 | | -11+(-9)= | | 6x+-5=7+-9x | | 0(5m)= | | 7(6-2a)=4a-(2a+4) | | 1-1x+4x+17=-3 | | 2p-3(5-2p)=5(p-3)-21 | | 42a^3b+3a^2B-108a^2=0 | | 3(1+7p)= | | 5x-12=-2x-47 | | -53=-2(3x+1)-5(6x+3) | | 16x^2+16x-64=0 | | Log(r^9/s^4) | | 2(x+3)-4(9x-6)=14 | | .25(d-8)=-15 | | 4(x+2)+3=4x+3 | | 4(p-3)=2p+8 | | X^2=sin^2y+cos^2y | | 3x+9y+15z=30 | | 79-(4x+10)=4(x+6)+x | | 8x^2+x+15=0 | | 3(x+2)=12-4(x+1) | | 13(v+2)-4v=3(3v+3)-13 | | x/3.2+5=17 | | -3(-6+6x)-4(5-3x)=-38 | | 9(x+8)+2=9x+9 | | 8x^2+t+15=0 | | 2/9-4=2/3 | | 2x^4+6x^3+-4x^2=0 | | x=x+y | | -2(4f)= | | g(-3)=2-3x |

Equations solver categories