(2e^2+5e+7)-(e^2-3e-1)=

Simple and best practice solution for (2e^2+5e+7)-(e^2-3e-1)= 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 (2e^2+5e+7)-(e^2-3e-1)= equation:


Simplifying
(2e2 + 5e + 7) + -1(e2 + -3e + -1) = 0

Reorder the terms:
(7 + 5e + 2e2) + -1(e2 + -3e + -1) = 0

Remove parenthesis around (7 + 5e + 2e2)
7 + 5e + 2e2 + -1(e2 + -3e + -1) = 0

Reorder the terms:
7 + 5e + 2e2 + -1(-1 + -3e + e2) = 0
7 + 5e + 2e2 + (-1 * -1 + -3e * -1 + e2 * -1) = 0
7 + 5e + 2e2 + (1 + 3e + -1e2) = 0

Reorder the terms:
7 + 1 + 5e + 3e + 2e2 + -1e2 = 0

Combine like terms: 7 + 1 = 8
8 + 5e + 3e + 2e2 + -1e2 = 0

Combine like terms: 5e + 3e = 8e
8 + 8e + 2e2 + -1e2 = 0

Combine like terms: 2e2 + -1e2 = 1e2
8 + 8e + 1e2 = 0

Solving
8 + 8e + 1e2 = 0

Solving for variable 'e'.

Begin completing the square.

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + 8e + -8 + e2 = 0 + -8

Reorder the terms:
8 + -8 + 8e + e2 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 8e + e2 = 0 + -8
8e + e2 = 0 + -8

Combine like terms: 0 + -8 = -8
8e + e2 = -8

The e term is 8e.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8e + 16 + e2 = -8 + 16

Reorder the terms:
16 + 8e + e2 = -8 + 16

Combine like terms: -8 + 16 = 8
16 + 8e + e2 = 8

Factor a perfect square on the left side:
(e + 4)(e + 4) = 8

Calculate the square root of the right side: 2.828427125

Break this problem into two subproblems by setting 
(e + 4) equal to 2.828427125 and -2.828427125.

Subproblem 1

e + 4 = 2.828427125 Simplifying e + 4 = 2.828427125 Reorder the terms: 4 + e = 2.828427125 Solving 4 + e = 2.828427125 Solving for variable 'e'. Move all terms containing e to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + e = 2.828427125 + -4 Combine like terms: 4 + -4 = 0 0 + e = 2.828427125 + -4 e = 2.828427125 + -4 Combine like terms: 2.828427125 + -4 = -1.171572875 e = -1.171572875 Simplifying e = -1.171572875

Subproblem 2

e + 4 = -2.828427125 Simplifying e + 4 = -2.828427125 Reorder the terms: 4 + e = -2.828427125 Solving 4 + e = -2.828427125 Solving for variable 'e'. Move all terms containing e to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + e = -2.828427125 + -4 Combine like terms: 4 + -4 = 0 0 + e = -2.828427125 + -4 e = -2.828427125 + -4 Combine like terms: -2.828427125 + -4 = -6.828427125 e = -6.828427125 Simplifying e = -6.828427125

Solution

The solution to the problem is based on the solutions from the subproblems. e = {-1.171572875, -6.828427125}

See similar equations:

| y=70+18 | | 6x^2-x+2=0 | | 7x-2=4(x+1)+13x-6 | | 7(6-c)=14 | | 5(y+39)+8=-42 | | -26j-35+27j=-56 | | g+(-2)=-6 | | a-2b=-8 | | 12t-6(t+1)=4(2t-1)-3 | | 10x^3+13x^2-3x=0 | | 5x+4(x-7)=26 | | -5p-49+-8p=-23 | | -30y=-27y-63 | | 15-2w=18w-26 | | m+2=-2 | | 12(t+-18)+6=-18 | | 2a+b=9 | | 14n-18-7n=45 | | 75=p+52 | | x^2+bx+12= | | y=7+-14x | | (4x-8)/(8x-16) | | (8)x-3=50 | | (x+3)(x-1)=-2 | | 4(w+6)=3w-7 | | 4X-8/8X-16 | | 4=2k-(3k-5) | | a-(-9)=-2 | | (x+(5/2))^2=(7/4) | | 2x+3.7=9.1 | | .75+4=.25+18 | | -124+20y+7=6(5y-4)-3 |

Equations solver categories