9.35x^2+1.97x-7.42=0

Simple and best practice solution for 9.35x^2+1.97x-7.42=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 9.35x^2+1.97x-7.42=0 equation:


Simplifying
9.35x2 + 1.97x + -7.42 = 0

Reorder the terms:
-7.42 + 1.97x + 9.35x2 = 0

Solving
-7.42 + 1.97x + 9.35x2 = 0

Solving for variable 'x'.

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

Divide each side by '9.35'.
-0.7935828877 + 0.2106951872x + x2 = 0

Move the constant term to the right:

Add '0.7935828877' to each side of the equation.
-0.7935828877 + 0.2106951872x + 0.7935828877 + x2 = 0 + 0.7935828877

Reorder the terms:
-0.7935828877 + 0.7935828877 + 0.2106951872x + x2 = 0 + 0.7935828877

Combine like terms: -0.7935828877 + 0.7935828877 = 0.0000000000
0.0000000000 + 0.2106951872x + x2 = 0 + 0.7935828877
0.2106951872x + x2 = 0 + 0.7935828877

Combine like terms: 0 + 0.7935828877 = 0.7935828877
0.2106951872x + x2 = 0.7935828877

The x term is 0.2106951872x.  Take half its coefficient (0.1053475936).
Square it (0.01109811548) and add it to both sides.

Add '0.01109811548' to each side of the equation.
0.2106951872x + 0.01109811548 + x2 = 0.7935828877 + 0.01109811548

Reorder the terms:
0.01109811548 + 0.2106951872x + x2 = 0.7935828877 + 0.01109811548

Combine like terms: 0.7935828877 + 0.01109811548 = 0.80468100318
0.01109811548 + 0.2106951872x + x2 = 0.80468100318

Factor a perfect square on the left side:
(x + 0.1053475936)(x + 0.1053475936) = 0.80468100318

Calculate the square root of the right side: 0.897040135

Break this problem into two subproblems by setting 
(x + 0.1053475936) equal to 0.897040135 and -0.897040135.

Subproblem 1

x + 0.1053475936 = 0.897040135 Simplifying x + 0.1053475936 = 0.897040135 Reorder the terms: 0.1053475936 + x = 0.897040135 Solving 0.1053475936 + x = 0.897040135 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1053475936' to each side of the equation. 0.1053475936 + -0.1053475936 + x = 0.897040135 + -0.1053475936 Combine like terms: 0.1053475936 + -0.1053475936 = 0.0000000000 0.0000000000 + x = 0.897040135 + -0.1053475936 x = 0.897040135 + -0.1053475936 Combine like terms: 0.897040135 + -0.1053475936 = 0.7916925414 x = 0.7916925414 Simplifying x = 0.7916925414

Subproblem 2

x + 0.1053475936 = -0.897040135 Simplifying x + 0.1053475936 = -0.897040135 Reorder the terms: 0.1053475936 + x = -0.897040135 Solving 0.1053475936 + x = -0.897040135 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1053475936' to each side of the equation. 0.1053475936 + -0.1053475936 + x = -0.897040135 + -0.1053475936 Combine like terms: 0.1053475936 + -0.1053475936 = 0.0000000000 0.0000000000 + x = -0.897040135 + -0.1053475936 x = -0.897040135 + -0.1053475936 Combine like terms: -0.897040135 + -0.1053475936 = -1.0023877286 x = -1.0023877286 Simplifying x = -1.0023877286

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.7916925414, -1.0023877286}

See similar equations:

| -7x+4=-104+5x | | 6=-3x+6x | | 10xy= | | -6(x+2)=(x-7)+2 | | B=p+4a+c | | 6w/2=15 | | ln(3x+2)=9 | | Q=140-10p | | 7x+10=9-5x | | 100=140-100 | | ln(x^2-3*x)=0 | | 1/3x=1/3-2/5 | | 0.18x+0.8(x-4)=0.01(4x-2) | | 16x+8=12x+18 | | 33x-72+12x-14=23-4x-x | | y=(2y-5) | | M^2+4m-29=0 | | 6(x+8)=(5x-4) | | 2n^2-12n-32=0 | | F(-x)=9x-4 | | (3x)^4/5 | | 5y-.5=3y-2.5 | | 4x=-2x+49 | | 2q+905=439 | | F(x+8)=9x-4 | | (3k)^4/3 | | 10x-11=5x-2 | | 53-13=-10x+6x | | 507=(x*3x)/2 | | (-6)-3y=3 | | 9p-8=12+5p | | (3k)^4/5 |

Equations solver categories