q^2+8q-35=0

Simple and best practice solution for q^2+8q-35=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 q^2+8q-35=0 equation:


Simplifying
q2 + 8q + -35 = 0

Reorder the terms:
-35 + 8q + q2 = 0

Solving
-35 + 8q + q2 = 0

Solving for variable 'q'.

Begin completing the square.

Move the constant term to the right:

Add '35' to each side of the equation.
-35 + 8q + 35 + q2 = 0 + 35

Reorder the terms:
-35 + 35 + 8q + q2 = 0 + 35

Combine like terms: -35 + 35 = 0
0 + 8q + q2 = 0 + 35
8q + q2 = 0 + 35

Combine like terms: 0 + 35 = 35
8q + q2 = 35

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

Add '16' to each side of the equation.
8q + 16 + q2 = 35 + 16

Reorder the terms:
16 + 8q + q2 = 35 + 16

Combine like terms: 35 + 16 = 51
16 + 8q + q2 = 51

Factor a perfect square on the left side:
(q + 4)(q + 4) = 51

Calculate the square root of the right side: 7.141428429

Break this problem into two subproblems by setting 
(q + 4) equal to 7.141428429 and -7.141428429.

Subproblem 1

q + 4 = 7.141428429 Simplifying q + 4 = 7.141428429 Reorder the terms: 4 + q = 7.141428429 Solving 4 + q = 7.141428429 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + q = 7.141428429 + -4 Combine like terms: 4 + -4 = 0 0 + q = 7.141428429 + -4 q = 7.141428429 + -4 Combine like terms: 7.141428429 + -4 = 3.141428429 q = 3.141428429 Simplifying q = 3.141428429

Subproblem 2

q + 4 = -7.141428429 Simplifying q + 4 = -7.141428429 Reorder the terms: 4 + q = -7.141428429 Solving 4 + q = -7.141428429 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + q = -7.141428429 + -4 Combine like terms: 4 + -4 = 0 0 + q = -7.141428429 + -4 q = -7.141428429 + -4 Combine like terms: -7.141428429 + -4 = -11.141428429 q = -11.141428429 Simplifying q = -11.141428429

Solution

The solution to the problem is based on the solutions from the subproblems. q = {3.141428429, -11.141428429}

See similar equations:

| 18n-14=41 | | 8k^2-16k+7=4 | | 1/3x-2y=5 | | (11x^2+3x)-(-4x^2+x)= | | f(12)=2x-10 | | 2.8*q=11.76 | | 3x+19+5x+13=180 | | z^2+16z=-5 | | 28x+6=-22 | | x+2y-4+5(2x+3)-7(2y-4)+5= | | 10c-25=x | | m=1/2;y-int=-5 | | 3x+1+4x-3=110 | | y^2+5xy-3x^2+7x-2y+13=0 | | 5.2x+8+2.1x-3= | | f(x)=m^2-4m+13 | | (x-6)(x+4i)(x-4i)= | | 4=13x-22 | | Niger=White | | M-3.2=6.7 | | -5u-15=-8u-45 | | -4x-1=31 | | 42x-21y=38 | | 1/4x-7/8=20-55 | | 20-5=x/3 | | 8x-43=-5x+35 | | 5x+7-2x=8x-8 | | 8x-7=-167 | | x^2+40=10x+35 | | 210.00+0.25x=380.00 | | 3x-6=-48 | | 3z=2.8+0.5 |

Equations solver categories