2p^2-15p+8=43

Simple and best practice solution for 2p^2-15p+8=43 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 2p^2-15p+8=43 equation:


Simplifying
2p2 + -15p + 8 = 43

Reorder the terms:
8 + -15p + 2p2 = 43

Solving
8 + -15p + 2p2 = 43

Solving for variable 'p'.

Reorder the terms:
8 + -43 + -15p + 2p2 = 43 + -43

Combine like terms: 8 + -43 = -35
-35 + -15p + 2p2 = 43 + -43

Combine like terms: 43 + -43 = 0
-35 + -15p + 2p2 = 0

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

Divide each side by '2'.
-17.5 + -7.5p + p2 = 0

Move the constant term to the right:

Add '17.5' to each side of the equation.
-17.5 + -7.5p + 17.5 + p2 = 0 + 17.5

Reorder the terms:
-17.5 + 17.5 + -7.5p + p2 = 0 + 17.5

Combine like terms: -17.5 + 17.5 = 0.0
0.0 + -7.5p + p2 = 0 + 17.5
-7.5p + p2 = 0 + 17.5

Combine like terms: 0 + 17.5 = 17.5
-7.5p + p2 = 17.5

The p term is -7.5p.  Take half its coefficient (-3.75).
Square it (14.0625) and add it to both sides.

Add '14.0625' to each side of the equation.
-7.5p + 14.0625 + p2 = 17.5 + 14.0625

Reorder the terms:
14.0625 + -7.5p + p2 = 17.5 + 14.0625

Combine like terms: 17.5 + 14.0625 = 31.5625
14.0625 + -7.5p + p2 = 31.5625

Factor a perfect square on the left side:
(p + -3.75)(p + -3.75) = 31.5625

Calculate the square root of the right side: 5.618051264

Break this problem into two subproblems by setting 
(p + -3.75) equal to 5.618051264 and -5.618051264.

Subproblem 1

p + -3.75 = 5.618051264 Simplifying p + -3.75 = 5.618051264 Reorder the terms: -3.75 + p = 5.618051264 Solving -3.75 + p = 5.618051264 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '3.75' to each side of the equation. -3.75 + 3.75 + p = 5.618051264 + 3.75 Combine like terms: -3.75 + 3.75 = 0.00 0.00 + p = 5.618051264 + 3.75 p = 5.618051264 + 3.75 Combine like terms: 5.618051264 + 3.75 = 9.368051264 p = 9.368051264 Simplifying p = 9.368051264

Subproblem 2

p + -3.75 = -5.618051264 Simplifying p + -3.75 = -5.618051264 Reorder the terms: -3.75 + p = -5.618051264 Solving -3.75 + p = -5.618051264 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '3.75' to each side of the equation. -3.75 + 3.75 + p = -5.618051264 + 3.75 Combine like terms: -3.75 + 3.75 = 0.00 0.00 + p = -5.618051264 + 3.75 p = -5.618051264 + 3.75 Combine like terms: -5.618051264 + 3.75 = -1.868051264 p = -1.868051264 Simplifying p = -1.868051264

Solution

The solution to the problem is based on the solutions from the subproblems. p = {9.368051264, -1.868051264}

See similar equations:

| -7w+15=3w-5 | | 4p^2-40p+56=0 | | 6z^2+13z=0 | | 8s=3(s+5) | | w^2+7w-40=0 | | q^2+3q+1=0 | | -2.8+.7p=.9p+5.3 | | 3(0)+2(0)-16=0 | | .8e-.6=-5+e | | 4n^2-7n+3=0 | | 220*33h=0.55 | | .8e-.6=-5+w | | 2v^2-10v-20=8 | | 2x^2-6x-80=0 | | 5c+12=8c+9.06 | | x^3+19x^2+3x+10=0 | | 8.3m-6.6=15.81 | | 6n^2+7n-20=0 | | 4.6k+3.45=-26.45 | | 0=2x^3-6x^2-5x+15 | | -16x^2+160x=0 | | -2.7l=37.26 | | g^2+11g-468=0 | | .5y=-55 | | 12x^2+18x-120=0 | | 2.82=6g | | (22)(27)-(49)(81)= | | 7=g-.0007 | | -71.1+j=-74 | | 4-1=19 | | z+.46=1.2 | | 4(x-8)=52 |

Equations solver categories