3p^2-3p-20=0

Simple and best practice solution for 3p^2-3p-20=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 3p^2-3p-20=0 equation:


Simplifying
3p2 + -3p + -20 = 0

Reorder the terms:
-20 + -3p + 3p2 = 0

Solving
-20 + -3p + 3p2 = 0

Solving for variable 'p'.

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

Divide each side by '3'.
-6.666666667 + -1p + p2 = 0

Move the constant term to the right:

Add '6.666666667' to each side of the equation.
-6.666666667 + -1p + 6.666666667 + p2 = 0 + 6.666666667

Reorder the terms:
-6.666666667 + 6.666666667 + -1p + p2 = 0 + 6.666666667

Combine like terms: -6.666666667 + 6.666666667 = 0.000000000
0.000000000 + -1p + p2 = 0 + 6.666666667
-1p + p2 = 0 + 6.666666667

Combine like terms: 0 + 6.666666667 = 6.666666667
-1p + p2 = 6.666666667

The p term is -1p.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1p + 0.25 + p2 = 6.666666667 + 0.25

Reorder the terms:
0.25 + -1p + p2 = 6.666666667 + 0.25

Combine like terms: 6.666666667 + 0.25 = 6.916666667
0.25 + -1p + p2 = 6.916666667

Factor a perfect square on the left side:
(p + -0.5)(p + -0.5) = 6.916666667

Calculate the square root of the right side: 2.62995564

Break this problem into two subproblems by setting 
(p + -0.5) equal to 2.62995564 and -2.62995564.

Subproblem 1

p + -0.5 = 2.62995564 Simplifying p + -0.5 = 2.62995564 Reorder the terms: -0.5 + p = 2.62995564 Solving -0.5 + p = 2.62995564 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + p = 2.62995564 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + p = 2.62995564 + 0.5 p = 2.62995564 + 0.5 Combine like terms: 2.62995564 + 0.5 = 3.12995564 p = 3.12995564 Simplifying p = 3.12995564

Subproblem 2

p + -0.5 = -2.62995564 Simplifying p + -0.5 = -2.62995564 Reorder the terms: -0.5 + p = -2.62995564 Solving -0.5 + p = -2.62995564 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + p = -2.62995564 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + p = -2.62995564 + 0.5 p = -2.62995564 + 0.5 Combine like terms: -2.62995564 + 0.5 = -2.12995564 p = -2.12995564 Simplifying p = -2.12995564

Solution

The solution to the problem is based on the solutions from the subproblems. p = {3.12995564, -2.12995564}

See similar equations:

| 3c+7=4c | | 1-2+5=4x-3 | | 1.5(x-4)=9.5 | | 4(k+7)+8k=64 | | 5v-32=3(-2+6v) | | 5y=4x+4 | | 6x-2(x-11)=90 | | c=0.4+5 | | 2b=6(5-4f) | | 0=14x+20000 | | 2500+125=3000+150 | | 8y^2-30y+27=0 | | 4.05(2)+14.40=4.50(2+3) | | 2(a+4)=2(a-4)+49 | | 2cos^2(t)-cos(t)-1=0 | | x^2+8i=0 | | x=4x-72 | | 2log(6)+3log(5)-log(30)=log(x) | | 15x^2-25+30=0 | | 40t+10=35t+20 | | 2(5x+2)=144 | | 35x^2+5x-18=0 | | b-7+3b=20 | | 1.2c+8=-2 | | x=x(x) | | 6x+4x+3=53 | | -6+5x=34+6 | | 81=x-20 | | 3=1+x | | 17+13*6=-8 | | 5x^2-18x+35=0 | | -37-5m=-1+3(-8m+7) |

Equations solver categories