5=4x^2-7x+2

Simple and best practice solution for 5=4x^2-7x+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 5=4x^2-7x+2 equation:


Simplifying
5 = 4x2 + -7x + 2

Reorder the terms:
5 = 2 + -7x + 4x2

Solving
5 = 2 + -7x + 4x2

Solving for variable 'x'.

Combine like terms: 5 + -2 = 3
3 + 7x + -4x2 = 2 + -7x + 4x2 + -2 + 7x + -4x2

Reorder the terms:
3 + 7x + -4x2 = 2 + -2 + -7x + 7x + 4x2 + -4x2

Combine like terms: 2 + -2 = 0
3 + 7x + -4x2 = 0 + -7x + 7x + 4x2 + -4x2
3 + 7x + -4x2 = -7x + 7x + 4x2 + -4x2

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

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:

| 4x^2-x=33 | | -4(2b+1)+(9b-9)=0 | | 9x+9=6-2(9x+7) | | x-4x^2=33 | | (.66x)60000=[(x-117700)(.66)]*115000 | | -6b^2=432 | | 16(2x-7)=4(8x+8) | | s-24=-44 | | 4.8q-2.8-3.9q=-0.1q-3.5 | | a-4a^2=3 | | 7y+6=6y-4 | | t^2-6t=16 | | 9x(10-4)= | | u^2+22u+25=0 | | 12x^2-134=0 | | x^2+2x+1=1.56 | | 2x-5y=172 | | 8=9v-7 | | d^2-2d-8=-8d-16 | | 6+10y-1=5y+19-2y | | w=3g+4h | | 5y+2=4y-4 | | 9x+10x=38 | | 9t^2+36t=0 | | n^2+2n-15=20 | | 2x-13=23 | | -4y+2=-5y+3 | | q^3+6q^2-4q-24=0 | | 9+14z-5=7z+84-3z | | B=wjf | | (w-5)/4=(w+3)/3 | | 8(20+x)=18 |

Equations solver categories