5f^1+9f^2-15=0

Simple and best practice solution for 5f^1+9f^2-15=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 5f^1+9f^2-15=0 equation:


Simplifying
5f + 9f2 + -15 = 0

Reorder the terms:
-15 + 5f + 9f2 = 0

Solving
-15 + 5f + 9f2 = 0

Solving for variable 'f'.

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

Divide each side by '9'.
-1.666666667 + 0.5555555556f + f2 = 0

Move the constant term to the right:

Add '1.666666667' to each side of the equation.
-1.666666667 + 0.5555555556f + 1.666666667 + f2 = 0 + 1.666666667

Reorder the terms:
-1.666666667 + 1.666666667 + 0.5555555556f + f2 = 0 + 1.666666667

Combine like terms: -1.666666667 + 1.666666667 = 0.000000000
0.000000000 + 0.5555555556f + f2 = 0 + 1.666666667
0.5555555556f + f2 = 0 + 1.666666667

Combine like terms: 0 + 1.666666667 = 1.666666667
0.5555555556f + f2 = 1.666666667

The f term is 0.5555555556f.  Take half its coefficient (0.2777777778).
Square it (0.07716049384) and add it to both sides.

Add '0.07716049384' to each side of the equation.
0.5555555556f + 0.07716049384 + f2 = 1.666666667 + 0.07716049384

Reorder the terms:
0.07716049384 + 0.5555555556f + f2 = 1.666666667 + 0.07716049384

Combine like terms: 1.666666667 + 0.07716049384 = 1.74382716084
0.07716049384 + 0.5555555556f + f2 = 1.74382716084

Factor a perfect square on the left side:
(f + 0.2777777778)(f + 0.2777777778) = 1.74382716084

Calculate the square root of the right side: 1.320540481

Break this problem into two subproblems by setting 
(f + 0.2777777778) equal to 1.320540481 and -1.320540481.

Subproblem 1

f + 0.2777777778 = 1.320540481 Simplifying f + 0.2777777778 = 1.320540481 Reorder the terms: 0.2777777778 + f = 1.320540481 Solving 0.2777777778 + f = 1.320540481 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Add '-0.2777777778' to each side of the equation. 0.2777777778 + -0.2777777778 + f = 1.320540481 + -0.2777777778 Combine like terms: 0.2777777778 + -0.2777777778 = 0.0000000000 0.0000000000 + f = 1.320540481 + -0.2777777778 f = 1.320540481 + -0.2777777778 Combine like terms: 1.320540481 + -0.2777777778 = 1.0427627032 f = 1.0427627032 Simplifying f = 1.0427627032

Subproblem 2

f + 0.2777777778 = -1.320540481 Simplifying f + 0.2777777778 = -1.320540481 Reorder the terms: 0.2777777778 + f = -1.320540481 Solving 0.2777777778 + f = -1.320540481 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Add '-0.2777777778' to each side of the equation. 0.2777777778 + -0.2777777778 + f = -1.320540481 + -0.2777777778 Combine like terms: 0.2777777778 + -0.2777777778 = 0.0000000000 0.0000000000 + f = -1.320540481 + -0.2777777778 f = -1.320540481 + -0.2777777778 Combine like terms: -1.320540481 + -0.2777777778 = -1.5983182588 f = -1.5983182588 Simplifying f = -1.5983182588

Solution

The solution to the problem is based on the solutions from the subproblems. f = {1.0427627032, -1.5983182588}

See similar equations:

| s/-20=7 | | 12=m-2 | | 6x^3-13x^2+5x=0 | | y-5=6(x-4) | | X^2+4x-2=19 | | 73-2x=7-10x | | 136-3x=33x+20 | | 4x-5=80 | | 24=3(x+1)-3 | | 7x-27=4x+12 | | 7t^2+4t=5 | | 4T/3=T+20 | | 8*x^2+1000=0 | | 10h+2+4h-6=-16 | | 3x^2-4x^3=0 | | 3x=4x^2 | | 13-7x=113-35x | | -10=y | | 2/5(x+23)=8 | | 4(a+b)=b-a+2x | | 6x+5=8x-1 | | 3x^2-5x^2-9x+15=0 | | x-4=24-12 | | 40=29+1/3x | | 2/3x+15 | | 12x+5=x+25 | | 4w^2+5w+6=0 | | 6a+3(1c+3)=0 | | 1/3q=18 | | 6x*-13x+5=0 | | m(x+n)=n | | 5x-25=5+6x |

Equations solver categories