-4(x^2+4x)=y+21

Simple and best practice solution for -4(x^2+4x)=y+21 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 -4(x^2+4x)=y+21 equation: 


Simplifying
-4(x2 + 4x) = y + 21

Reorder the terms:
-4(4x + x2) = y + 21
(4x * -4 + x2 * -4) = y + 21
(-16x + -4x2) = y + 21

Reorder the terms:
-16x + -4x2 = 21 + y

Solving
-16x + -4x2 = 21 + y

Solving for variable 'x'.

Reorder the terms:
-21 + -16x + -4x2 + -1y = 21 + y + -21 + -1y

Reorder the terms:
-21 + -16x + -4x2 + -1y = 21 + -21 + y + -1y

Combine like terms: 21 + -21 = 0
-21 + -16x + -4x2 + -1y = 0 + y + -1y
-21 + -16x + -4x2 + -1y = y + -1y

Combine like terms: y + -1y = 0
-21 + -16x + -4x2 + -1y = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(21 + 16x + 4x2 + y) = 0

Ignore the factor -1.

Subproblem 1
Set the factor '(21 + 16x + 4x2 + y)' equal to zero and attempt to solve:

Simplifying
21 + 16x + 4x2 + y = 0

Solving
21 + 16x + 4x2 + y = 0

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

See similar equations:

| 8(n)-1=15 | | 9c=-20 | | -4(x^2+4)=y+21 | | -b^2=1024 | | 3x+x-3=3x+8 | | 6(3-2z)=42 | | -4(x^2+4)=0 | | y=0.08x+3.5 | | a*b^2=1024 | | 5x+12-2+9x= | | 4b-0.5=5b | | 19.2+50x=0 | | 6x+3(-3x-1)=36 | | 2(a-b)+2(a)+2(b)= | | -10+2d= | | 9t+6-6t=6 | | 100[0.07(x+4)]= | | 4r^2+r-33=0 | | 5y+5(2y-3)=-120 | | 20x-x^2=8x | | 4x+9+2x-6=36 | | 2y+12=-y-12 | | 4.8x=1.4 | | 4.8x=1.4 | | 8-3p(p-4)=2p | | -5(4n-4)=-60 | | p^2-8=0 | | 7x+55=2x+130 | | w-6=19 | | 1.22n+4=3.5 | | 8-5h-6=24 | | 13-4x+15=12 |

Equations solver categories