4x^2=-7x+14

Simple and best practice solution for 4x^2=-7x+14 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=-7x+14 equation:


Simplifying
4x2 = -7x + 14

Reorder the terms:
4x2 = 14 + -7x

Solving
4x2 = 14 + -7x

Solving for variable 'x'.

Reorder the terms:
-14 + 7x + 4x2 = 14 + -7x + -14 + 7x

Reorder the terms:
-14 + 7x + 4x2 = 14 + -14 + -7x + 7x

Combine like terms: 14 + -14 = 0
-14 + 7x + 4x2 = 0 + -7x + 7x
-14 + 7x + 4x2 = -7x + 7x

Combine like terms: -7x + 7x = 0
-14 + 7x + 4x2 = 0

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

Divide each side by '4'.
-3.5 + 1.75x + x2 = 0

Move the constant term to the right:

Add '3.5' to each side of the equation.
-3.5 + 1.75x + 3.5 + x2 = 0 + 3.5

Reorder the terms:
-3.5 + 3.5 + 1.75x + x2 = 0 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + 1.75x + x2 = 0 + 3.5
1.75x + x2 = 0 + 3.5

Combine like terms: 0 + 3.5 = 3.5
1.75x + x2 = 3.5

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 = 3.5 + 0.765625

Reorder the terms:
0.765625 + 1.75x + x2 = 3.5 + 0.765625

Combine like terms: 3.5 + 0.765625 = 4.265625
0.765625 + 1.75x + x2 = 4.265625

Factor a perfect square on the left side:
(x + 0.875)(x + 0.875) = 4.265625

Calculate the square root of the right side: 2.065338955

Break this problem into two subproblems by setting 
(x + 0.875) equal to 2.065338955 and -2.065338955.

Subproblem 1

x + 0.875 = 2.065338955 Simplifying x + 0.875 = 2.065338955 Reorder the terms: 0.875 + x = 2.065338955 Solving 0.875 + x = 2.065338955 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 = 2.065338955 + -0.875 Combine like terms: 0.875 + -0.875 = 0.000 0.000 + x = 2.065338955 + -0.875 x = 2.065338955 + -0.875 Combine like terms: 2.065338955 + -0.875 = 1.190338955 x = 1.190338955 Simplifying x = 1.190338955

Subproblem 2

x + 0.875 = -2.065338955 Simplifying x + 0.875 = -2.065338955 Reorder the terms: 0.875 + x = -2.065338955 Solving 0.875 + x = -2.065338955 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 = -2.065338955 + -0.875 Combine like terms: 0.875 + -0.875 = 0.000 0.000 + x = -2.065338955 + -0.875 x = -2.065338955 + -0.875 Combine like terms: -2.065338955 + -0.875 = -2.940338955 x = -2.940338955 Simplifying x = -2.940338955

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.190338955, -2.940338955}

See similar equations:

| 2-(R-8)-(r-4)=3(r+5)+3 | | 5y-17(10)=25 | | 4n^2=121 | | -5/12-3/10 | | 10000+4X=12X | | 3y+4x=695.45 | | 17(9c-1)-14=151c+17 | | 8=3r+4 | | 18-3x=3x-18 | | 0.5(x+5)+0.6(x+25)=45 | | 0.05x+0.5=1 | | 4x+2=-9 | | Ln(x-4)=20-ln(x-4) | | 4/3*x^2-48=0 | | 2*cos(2x)+cosx=0 | | 8(x+3)=4(2x+8)-8 | | W=py+h | | 3x+7=-30 | | 7+x=30 | | -3x+5=-8x-6 | | 8(5+k)-2=17+4k | | 15abc/25bc | | 2x^4-27x+4=0 | | 11x+7y=225 | | 3-1-5-7= | | 14.95+13x=-15+.39x | | h^2-35=-35 | | T^5(2-3T^2)(3T-2T^2+5)=0 | | 13z+79=5x+25 | | -16t^2+120t=s(t) | | 7x+21xy=0 | | -1/4x^2=0 |

Equations solver categories