a(a-5)+3(2a+7)=

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


Simplifying
a(a + -5) + 3(2a + 7) = 0

Reorder the terms:
a(-5 + a) + 3(2a + 7) = 0
(-5 * a + a * a) + 3(2a + 7) = 0
(-5a + a2) + 3(2a + 7) = 0

Reorder the terms:
-5a + a2 + 3(7 + 2a) = 0
-5a + a2 + (7 * 3 + 2a * 3) = 0
-5a + a2 + (21 + 6a) = 0

Reorder the terms:
21 + -5a + 6a + a2 = 0

Combine like terms: -5a + 6a = 1a
21 + 1a + a2 = 0

Solving
21 + 1a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '-21' to each side of the equation.
21 + 1a + -21 + a2 = 0 + -21

Reorder the terms:
21 + -21 + 1a + a2 = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 1a + a2 = 0 + -21
1a + a2 = 0 + -21

Combine like terms: 0 + -21 = -21
1a + a2 = -21

The a term is 1a.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
a + 0.25 + a2 = -21 + 0.25

Reorder the terms:
0.25 + a + a2 = -21 + 0.25

Combine like terms: -21 + 0.25 = -20.75
0.25 + a + a2 = -20.75

Factor a perfect square on the left side:
(a + 0.5)(a + 0.5) = -20.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 6(x+3)-10= | | 10+8=66 | | 18-7p=8p+3(6-5p) | | y-6y=8+12 | | x^4-24x^2+144=0 | | 7(x+4)-10= | | -5+6(3+6n)=-4n-27 | | 2/3m^-1n^5 | | 6=6-n-6n | | 0=2m+4+2 | | 4w=4+20 | | 4=b+2+6 | | 3-2n+6=9 | | 9=-2r+5r | | 9=2r+5r | | 9y-6=8y-3 | | 7=1+2p-2 | | 2x+3=3x-54 | | 0.4(10)+x=0.8(20+x) | | 4(x-5)=(56/14) | | Y=40*x | | 2x=1.2(x-1.2) | | -3=3x-3+4x | | v^2+6v=37 | | 7b-4b=36 | | y=40*x-(12) | | 0.3(30)-0.8x+x=0.1(40) | | 0=-m-5m | | 2x+4=2(8-6x)+2 | | 9x=5y+10 | | (a^1/2b)^1/2(ab^1/2) | | Y=40*x-12 |

Equations solver categories