(4a^2-5a)+(-2a^2+9a+7)=

Simple and best practice solution for (4a^2-5a)+(-2a^2+9a+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 (4a^2-5a)+(-2a^2+9a+7)= equation:


Simplifying
(4a2 + -5a) + (-2a2 + 9a + 7) = 0

Reorder the terms:
(-5a + 4a2) + (-2a2 + 9a + 7) = 0

Remove parenthesis around (-5a + 4a2)
-5a + 4a2 + (-2a2 + 9a + 7) = 0

Reorder the terms:
-5a + 4a2 + (7 + 9a + -2a2) = 0

Remove parenthesis around (7 + 9a + -2a2)
-5a + 4a2 + 7 + 9a + -2a2 = 0

Reorder the terms:
7 + -5a + 9a + 4a2 + -2a2 = 0

Combine like terms: -5a + 9a = 4a
7 + 4a + 4a2 + -2a2 = 0

Combine like terms: 4a2 + -2a2 = 2a2
7 + 4a + 2a2 = 0

Solving
7 + 4a + 2a2 = 0

Solving for variable 'a'.

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

Divide each side by '2'.
3.5 + 2a + a2 = 0

Move the constant term to the right:

Add '-3.5' to each side of the equation.
3.5 + 2a + -3.5 + a2 = 0 + -3.5

Reorder the terms:
3.5 + -3.5 + 2a + a2 = 0 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + 2a + a2 = 0 + -3.5
2a + a2 = 0 + -3.5

Combine like terms: 0 + -3.5 = -3.5
2a + a2 = -3.5

The a term is 2a.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2a + 1 + a2 = -3.5 + 1

Reorder the terms:
1 + 2a + a2 = -3.5 + 1

Combine like terms: -3.5 + 1 = -2.5
1 + 2a + a2 = -2.5

Factor a perfect square on the left side:
(a + 1)(a + 1) = -2.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -112=-2+2(7x+1) | | 12(3x+5)-7(2x-2)=2x-66 | | (x-7-4i)(x-7+4i)=y | | 64=c+5 | | -x+16-4x=28-4x | | 50=r-17 | | 3(1-7v)=-123 | | 67x(78y)2+66-7=58790 | | -8+-6x+20x^2+15x^3=0 | | (x+4-i)(x+4+i)=y | | 8=4+-2k | | -5(3x-4)=110 | | y=6x+174 | | 67x(78y)2+66-7=55 | | 147/150 | | 1/6-4=-13 | | (4ab)(6a^2b^3)(2a^5)= | | -5(x+5y)+3(5x+y)= | | 7(1-3v)=154 | | sqrt(7x-6x)-6=0 | | sqrt(2x+9)-6=0 | | 98.6x^2+5x+197.2=0 | | 9=-9-3v | | (x-2-i)(x-2+i)=y | | 9-2x=5x | | 15x^5+20x^4-6x^3-8x^2=0 | | y/3-1=1 | | 2.49=1.24(x+11.17) | | 15x^2+17x-2-2=0 | | 234=9(k+6) | | 3j-7=-4 | | 24-8x-2= |

Equations solver categories