x^2+10x+21=(x-7)(x-3)

Simple and best practice solution for x^2+10x+21=(x-7)(x-3) 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 x^2+10x+21=(x-7)(x-3) equation: 



x^2+10x+21=(x-7)(x-3)

We move all terms to the left:

x^2+10x+21-((x-7)(x-3))=0

We multiply parentheses ..

x^2-((+x^2-3x-7x+21))+10x+21=0



We calculate terms in parentheses: -((+x^2-3x-7x+21)), so:

(+x^2-3x-7x+21)

We get rid of parentheses

x^2-3x-7x+21

We add all the numbers together, and all the variables

x^2-10x+21

Back to the equation:

-(x^2-10x+21)



We add all the numbers together, and all the variables

x^2+10x-(x^2-10x+21)+21=0

We get rid of parentheses

x^2-x^2+10x+10x-21+21=0

We add all the numbers together, and all the variables

20x=0

x=0/20

x=0

See similar equations:

| 293=107-y | | 3x18=54 | | 3z÷8+5=4 | | 8/3=7x/2x | | f/8-23=-23 | | 2(4x+1)-6=20 | | 13x−14=9x+10. | | 8e+3=3e-12 | | 4x-12=2x=50 | | 2)3x-1)+2(4x+5)=8 | | 7+9x÷9-7x=1 | | 2b+12=b+8 | | 2(3x-1+2(4x+5=8 | | X2=13x-30 | | 2,6x-4=1,4x+8 | | 2,6x-4=1,4+8 | | 1/2(4x-6)=25 | | 2b-2/3=b+1 | | s^2-4s-60=0 | | 1/2(4x-6)+15= | | 6.4=3w | | X=4n+5/2n+3 | | 3b÷4=6b= | | 3b÷4=6 | | -8(-c+3)=7c | | -6d+9-10=5-3(3d-8) | | 7y-15=55 | | 2x-2x=21-13 | | 729/(2x-15)=81 | | 6z+-4=62 | | X+3=-15+3x | | 3m+8=3(4+m)–4 |

Equations solver categories