8x^2+34x+21=(2x+7)(4x+21)

Simple and best practice solution for 8x^2+34x+21=(2x+7)(4x+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 8x^2+34x+21=(2x+7)(4x+21) equation: 



8x^2+34x+21=(2x+7)(4x+21)

We move all terms to the left:

8x^2+34x+21-((2x+7)(4x+21))=0

We multiply parentheses ..

8x^2-((+8x^2+42x+28x+147))+34x+21=0



We calculate terms in parentheses: -((+8x^2+42x+28x+147)), so:

(+8x^2+42x+28x+147)

We get rid of parentheses

8x^2+42x+28x+147

We add all the numbers together, and all the variables

8x^2+70x+147

Back to the equation:

-(8x^2+70x+147)



We add all the numbers together, and all the variables

8x^2+34x-(8x^2+70x+147)+21=0

We get rid of parentheses

8x^2-8x^2+34x-70x-147+21=0

We add all the numbers together, and all the variables

-36x-126=0

We move all terms containing x to the left, all other terms to the right

-36x=126

x=126/-36

x=-3+1/2

See similar equations:

| -6-5x+10=19 | | 8x^2+34x+21=(2x+7)(4x-21) | | 5+3(3x-4)=9-4(2x+1) | | 1/3z+5=2/3z | | (−7.4)+v=9.11 | | 1/3z+5=-2/3z | | 12=-6a | | X/2-5=-12-2x3 | | 13/7=10/x | | 2x+2.6x=33 | | 3(x-2)-2(-2x+3)=9-3x | | (-5x^2)-41x-30=0 | | (5x^2)+41x+30=0 | | -2c+14=0 | | 3(x+8)=9x+5-6x+19 | | 2x-32+4(3x-2462=14x | | 3x+3x-1=16 | | 5/6+8y=1 | | (8)(2/3)^x=(4)(16/27) | | 11y=4y+14 | | 9(-5z-1)=-3 | | 3-(x-6)÷2=4×-5 | | 2+(2u+9)=50 | | -4-8=4(3n+2) | | 3^3x+1=9^x | | x^2+122x-504=0 | | -2t-4+5t=8+6t+3 | | 3x+3x-1=15 | | 5.1a+13=69.1 | | 6z-12=4z+4 | | 10s+15s+5=180 | | 2s-51=s |

Equations solver categories