r^2+7r-12=0

Simple and best practice solution for r^2+7r-12=0 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 r^2+7r-12=0 equation: 



r^2+7r-12=0

a = 1; b = 7; c = -12;
Δ = b2-4ac
Δ = 72-4·1·(-12)
Δ = 97
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$r_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$r_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$r_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-\sqrt{97}}{2*1}=\frac{-7-\sqrt{97}}{2}
$


$r_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+\sqrt{97}}{2*1}=\frac{-7+\sqrt{97}}{2}
$

See similar equations:

| (u+5)^2-8=0 | | (5x+52)=(13x+34) | | v/4+-30=-38 | | 27b-38b=-11 | | -18+-3q=3 | | 1/4x+1/8x-1+2/4=85/8 | | 26.5=9.5+2.5(x+5.5 | | 8(3)^(x+5)=32 | | 13=d•6 | | 2z+4z+3z-9z+2z=8 | | 15x=12x+2 | | 5x+52=13x+34 | | 21(8x-1)=17(6x+3 | | 18q-8q+3q-5q-8=16 | | 4x+2-4x-9=6(x-2) | | 12n+n-13n+2n+n-1=5 | | u/3-12=19 | | [2x+5|−3=7 | | 5z+4=-9/7 | | 50(10)=x | | 3/4x×10=20 | | 19g-17g+2g+3g=7 | | 2x+13=3(x–2) | | -9(-9b-3)-6=14+250 | | 3w-27=0 | | 1.8x-6.3=-0.3 | | 13b-11b-16b=-14 | | 0.15(9.85x+3.70=4.65 | | A=(6x–27)˚C=(4x+15)˚ | | 7g-7g+6g-5=7 | | 2x^2+3x=4x-5 | | -2-0.5x=12=-0.3x+6.2 |

Equations solver categories