n^2+4a-21=

Simple and best practice solution for n^2+4a-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 n^2+4a-21= equation:


Simplifying
n2 + 4a + -21 = 0

Reorder the terms:
-21 + 4a + n2 = 0

Solving
-21 + 4a + n2 = 0

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '21' to each side of the equation.
-21 + 4a + 21 + n2 = 0 + 21

Reorder the terms:
-21 + 21 + 4a + n2 = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 4a + n2 = 0 + 21
4a + n2 = 0 + 21

Combine like terms: 0 + 21 = 21
4a + n2 = 21

Add '-1n2' to each side of the equation.
4a + n2 + -1n2 = 21 + -1n2

Combine like terms: n2 + -1n2 = 0
4a + 0 = 21 + -1n2
4a = 21 + -1n2

Divide each side by '4'.
a = 5.25 + -0.25n2

Simplifying
a = 5.25 + -0.25n2

See similar equations:

| 4+(x+0)= | | 12.5+4.5(x-3)=62 | | 2(x+8)=8(x+2) | | (3w+1)(w)=14 | | 2x-13=99 | | 3w+1(w)=14 | | 21=3n^3-3 | | 12x^2-60+75=0 | | 3x^2-18x-3=0 | | 6(8-x)=32-(8-x) | | 5x^2-36x+75=0 | | -7(-3+7n)-n=-7(-3-8n) | | kx^2-25x=0 | | 39-x=-5(x-3) | | 39-x=-5 | | x^2+(4*6*x+3x)-5=3 | | 2m+2p=16pequals | | x=(x-1*.89)+77000 | | x=0.94x+77000 | | 5x^2+65x+50=0 | | 5x^2-8x+43=0 | | bx-6y=-17 | | x=(x-1*0.94)+77000 | | 4=5+n | | -6=x-17 | | 61-4=23x+16 | | 4(n+7)=n-(4-n) | | 3x+10=23-8x | | -17.5=3.5c | | 4(n+7)= | | y=2x^3+x^2-x | | 4(x-72)=-16 |

Equations solver categories