3x(5x+7)=-9

Simple and best practice solution for 3x(5x+7)=-9 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 3x(5x+7)=-9 equation: 



3x(5x+7)=-9

We move all terms to the left:

3x(5x+7)-(-9)=0

We add all the numbers together, and all the variables

3x(5x+7)+9=0

We multiply parentheses

15x^2+21x+9=0

a = 15; b = 21; c = +9;
Δ = b2-4ac
Δ = 212-4·15·9
Δ = -99
Delta is less than zero, so there is no solution for the equation

See similar equations:

| 9=7p | | 4x-7=6x-81 | | 2(-5+6x)-2(-4x-8)=-8-2x-8 | | 5x/3=100 | | 2x+33+3x+20=90 | | (4x+22)+12=-4x+34 | | 15=8w-3w | | 0.5l+1=7+4.5l | | 40=7v-2v | | 5x+18=7x+16 | | 5x+8x=-(2+4x)-2(1-8x) | | -5=5/b | | 18+4v=8(-8-2v)+2 | | -26=m-23 | | 4|3x-4|=3 | | P(t)=6050(1.04)^t | | 2x+x+×-20=180 | | 1/5x-1=2/3 | | -4(3+2x)=2-9x | | 180=2x-10+x+40 | | 1/5e-1=1/3 | | 9x-4+6x-4+x=120 | | -8+3m=8(2m-1) | | 6x-6=6(3+3x) | | -2(4n-3)=20+6n | | -17x-22-8x=218 | | 24c-15=13-5 | | 154=7(-6x+4) | | 447=3(n-1)-6 | | n+4=6-5n+5n | | -87a=3 | | 0.5x+1.5(x+1)-0.25=5 |

Equations solver categories