(v^2-7v-3)+(4v^2-5v+6)=

Simple and best practice solution for (v^2-7v-3)+(4v^2-5v+6)= 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 (v^2-7v-3)+(4v^2-5v+6)= equation:


Simplifying
(v2 + -7v + -3) + (4v2 + -5v + 6) = 0

Reorder the terms:
(-3 + -7v + v2) + (4v2 + -5v + 6) = 0

Remove parenthesis around (-3 + -7v + v2)
-3 + -7v + v2 + (4v2 + -5v + 6) = 0

Reorder the terms:
-3 + -7v + v2 + (6 + -5v + 4v2) = 0

Remove parenthesis around (6 + -5v + 4v2)
-3 + -7v + v2 + 6 + -5v + 4v2 = 0

Reorder the terms:
-3 + 6 + -7v + -5v + v2 + 4v2 = 0

Combine like terms: -3 + 6 = 3
3 + -7v + -5v + v2 + 4v2 = 0

Combine like terms: -7v + -5v = -12v
3 + -12v + v2 + 4v2 = 0

Combine like terms: v2 + 4v2 = 5v2
3 + -12v + 5v2 = 0

Solving
3 + -12v + 5v2 = 0

Solving for variable 'v'.

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

Divide each side by '5'.
0.6 + -2.4v + v2 = 0

Move the constant term to the right:

Add '-0.6' to each side of the equation.
0.6 + -2.4v + -0.6 + v2 = 0 + -0.6

Reorder the terms:
0.6 + -0.6 + -2.4v + v2 = 0 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + -2.4v + v2 = 0 + -0.6
-2.4v + v2 = 0 + -0.6

Combine like terms: 0 + -0.6 = -0.6
-2.4v + v2 = -0.6

The v term is -2.4v.  Take half its coefficient (-1.2).
Square it (1.44) and add it to both sides.

Add '1.44' to each side of the equation.
-2.4v + 1.44 + v2 = -0.6 + 1.44

Reorder the terms:
1.44 + -2.4v + v2 = -0.6 + 1.44

Combine like terms: -0.6 + 1.44 = 0.84
1.44 + -2.4v + v2 = 0.84

Factor a perfect square on the left side:
(v + -1.2)(v + -1.2) = 0.84

Calculate the square root of the right side: 0.916515139

Break this problem into two subproblems by setting 
(v + -1.2) equal to 0.916515139 and -0.916515139.

Subproblem 1

v + -1.2 = 0.916515139 Simplifying v + -1.2 = 0.916515139 Reorder the terms: -1.2 + v = 0.916515139 Solving -1.2 + v = 0.916515139 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '1.2' to each side of the equation. -1.2 + 1.2 + v = 0.916515139 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + v = 0.916515139 + 1.2 v = 0.916515139 + 1.2 Combine like terms: 0.916515139 + 1.2 = 2.116515139 v = 2.116515139 Simplifying v = 2.116515139

Subproblem 2

v + -1.2 = -0.916515139 Simplifying v + -1.2 = -0.916515139 Reorder the terms: -1.2 + v = -0.916515139 Solving -1.2 + v = -0.916515139 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '1.2' to each side of the equation. -1.2 + 1.2 + v = -0.916515139 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + v = -0.916515139 + 1.2 v = -0.916515139 + 1.2 Combine like terms: -0.916515139 + 1.2 = 0.283484861 v = 0.283484861 Simplifying v = 0.283484861

Solution

The solution to the problem is based on the solutions from the subproblems. v = {2.116515139, 0.283484861}

See similar equations:

| (x^2)-4x=-1 | | 64x^3+5=80x^2+4x | | 6+2(x+8)+3x+11+x= | | 3x-2=168 | | 4y=5-y^4 | | -5.5(2y+6)-1.7(3y-5)= | | 4+(9x+9)2= | | X(3)=64 | | 6=3.51x^2+24.4*x+780 | | X^2=44.02 | | 3(2p-1)=p+5 | | -3(5y-9)-y=4(y-2) | | X(2)=256 | | e-14+251=712 | | 3a+2b=-7 | | -2.06y+18=10.84 | | 14f^2=-37f | | -6x+13=y | | 6m^2-10m= | | 7f+4=6 | | 0.25b*0.50b= | | 12*b*8=338 | | 10x+3=3(3x+2) | | 10u-9a-(14+8a)= | | y+2=0.6(y+3) | | 5x-(6x+4)=x-7 | | 81r^2-144r+64=0 | | x-5/2-3x/4=x-25/6 | | 13-(5m+7)=2+2m-17 | | x^2-30+81=0 | | 9x-8=4+6x | | c+3.6=49 |

Equations solver categories