(x+5)(x-4)=x(+7x+20)

Simple and best practice solution for (x+5)(x-4)=x(+7x+20) 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+5)(x-4)=x(+7x+20) equation: 



(x+5)(x-4)=x(+7x+20)

We move all terms to the left:

(x+5)(x-4)-(x(+7x+20))=0

We add all the numbers together, and all the variables

(x+5)(x-4)-(x(7x+20))=0

We multiply parentheses ..

(+x^2-4x+5x-20)-(x(7x+20))=0



We calculate terms in parentheses: -(x(7x+20)), so:

x(7x+20)

We multiply parentheses

7x^2+20x

Back to the equation:

-(7x^2+20x)



We get rid of parentheses

x^2-7x^2-4x+5x-20x-20=0

We add all the numbers together, and all the variables

-6x^2-19x-20=0

a = -6; b = -19; c = -20;
Δ = b2-4ac
Δ = -192-4·(-6)·(-20)
Δ = -119
Delta is less than zero, so there is no solution for the equation

See similar equations:

| -6r+8=-10-6r | | a^2+8a-10=0 | | -6w-4w=-10w | | r^2-29=0 | | 4n+3-2n-7=20 | | 11d-9d=5d+28 | | 1.2x-5.3=7x-3.7 | | F(10)=2x-3 | | (9x+2)=(2x+20) | | F(x)=110 | | (9x+2)=(5x-18) | | 5(x+4)=3x=28 | | (2x-2)+(4x+2)=180 | | 15=7(4p+1)+8(1+6p) | | (2x-29)+(7x+2)=180 | | (2x-29)=(7x+2) | | (5x+24)=(6x-6) | | 3(x-2)^2=66 | | (3x-23)=(7x-7) | | (3x-23)=(7x07) | | (5x+15)+(3x+15)=180 | | F=9/2(n-20) | | (5x+15)=(3x+15) | | (2x+22)=(4x+2) | | 7x=9=8x-8 | | (7x+9)+(8x-8)=180 | | 7x+9+8x-8=180 | | (x-18)=(6x+2) | | y+113=180 | | (12+2x)/(15+x)=1.1 | | y+121=180 | | (1/2)x^2=2 |

Equations solver categories