If it's not what You are looking for type in the equation solver your own equation and let us solve it.
7r^2+38r+15=0
a = 7; b = 38; c = +15;
Δ = b2-4ac
Δ = 382-4·7·15
Δ = 1024
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}$$r_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{1024}=32$$r_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(38)-32}{2*7}=\frac{-70}{14} =-5 $$r_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(38)+32}{2*7}=\frac{-6}{14} =-3/7 $
| 8(y+1/4)+5y=0 | | 4x^2=9x+x^2 | | (X)(x)+2x-35=0 | | 285-10x=15x-190 | | 12-9x=4x-27 | | 6x-13=-17 | | (5x+6)(x-1)=0 | | 5k-3=9 | | 9+5x+7x=21 | | 4/5y=4 | | 13x-6=-17 | | 6(4b-5)=66 | | 9x=7/ | | 13x+6=-17 | | -7a+12=3a+49 | | 14=-4x+2(x-2) | | 9y-1=y=25 | | -2u+17=-9(u+2) | | (x+1)^2-2=0 | | 14=-4x+2(x-2 | | 5-8÷n=-1 | | 3x*2-72x=-432 | | X/3+6=x | | -7a+12=3a=49 | | 17y=8y+72 | | 4(-8-2x)=-88 | | -7v-14=-9(v+2) | | 56+14x=70 | | 5(6h+7)=185 | | 235=-5(6v+-5 | | u–449= 6 | | -8=-8w+5(w-7) |