25a^2-15=2a

Simple and best practice solution for 25a^2-15=2a 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 25a^2-15=2a equation:


Simplifying
25a2 + -15 = 2a

Reorder the terms:
-15 + 25a2 = 2a

Solving
-15 + 25a2 = 2a

Solving for variable 'a'.

Reorder the terms:
-15 + -2a + 25a2 = 2a + -2a

Combine like terms: 2a + -2a = 0
-15 + -2a + 25a2 = 0

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

Divide each side by '25'.
-0.6 + -0.08a + a2 = 0

Move the constant term to the right:

Add '0.6' to each side of the equation.
-0.6 + -0.08a + 0.6 + a2 = 0 + 0.6

Reorder the terms:
-0.6 + 0.6 + -0.08a + a2 = 0 + 0.6

Combine like terms: -0.6 + 0.6 = 0.0
0.0 + -0.08a + a2 = 0 + 0.6
-0.08a + a2 = 0 + 0.6

Combine like terms: 0 + 0.6 = 0.6
-0.08a + a2 = 0.6

The a term is -0.08a.  Take half its coefficient (-0.04).
Square it (0.0016) and add it to both sides.

Add '0.0016' to each side of the equation.
-0.08a + 0.0016 + a2 = 0.6 + 0.0016

Reorder the terms:
0.0016 + -0.08a + a2 = 0.6 + 0.0016

Combine like terms: 0.6 + 0.0016 = 0.6016
0.0016 + -0.08a + a2 = 0.6016

Factor a perfect square on the left side:
(a + -0.04)(a + -0.04) = 0.6016

Calculate the square root of the right side: 0.775628777

Break this problem into two subproblems by setting 
(a + -0.04) equal to 0.775628777 and -0.775628777.

Subproblem 1

a + -0.04 = 0.775628777 Simplifying a + -0.04 = 0.775628777 Reorder the terms: -0.04 + a = 0.775628777 Solving -0.04 + a = 0.775628777 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.04' to each side of the equation. -0.04 + 0.04 + a = 0.775628777 + 0.04 Combine like terms: -0.04 + 0.04 = 0.00 0.00 + a = 0.775628777 + 0.04 a = 0.775628777 + 0.04 Combine like terms: 0.775628777 + 0.04 = 0.815628777 a = 0.815628777 Simplifying a = 0.815628777

Subproblem 2

a + -0.04 = -0.775628777 Simplifying a + -0.04 = -0.775628777 Reorder the terms: -0.04 + a = -0.775628777 Solving -0.04 + a = -0.775628777 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.04' to each side of the equation. -0.04 + 0.04 + a = -0.775628777 + 0.04 Combine like terms: -0.04 + 0.04 = 0.00 0.00 + a = -0.775628777 + 0.04 a = -0.775628777 + 0.04 Combine like terms: -0.775628777 + 0.04 = -0.735628777 a = -0.735628777 Simplifying a = -0.735628777

Solution

The solution to the problem is based on the solutions from the subproblems. a = {0.815628777, -0.735628777}

See similar equations:

| 9r+4=29r+9 | | 14+2r=20 | | h=12+15t+-16t^2 | | 7x-7-4x=4x-4 | | (a^2+b^2)(a+b)=0 | | x+(4x-5)=125 | | (8x+6)(-4x-6)=0 | | 30/7.5 | | h=12+15t+16t^2 | | 14b=10 | | 4x-1-3=x-11 | | 3+p=3.1 | | 2(3a+b)=h | | 9x=14+17x | | 55x+20(72x+36y)=200 | | X-2/5=-1/6 | | C=4c-8 | | -2x-9=7x+9 | | (m^3+3)(5m+n)=0 | | -8/3a=24 | | 2x^2+8x-64=1080 | | 3x^2+x^2=200 | | 3x^2(x^2)=200 | | 4(2a-3)-2(a-4)=3(a-3)-1 | | 3+4+x=1+6 | | 6(y-5)=z(10+3y) | | 5x+11y+1z=57.73 | | 15x+13=3x-19 | | X-5c=8 | | .75a+14=18 | | X-3/6=1 | | .75+14=18 |

Equations solver categories