If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-2p^2-15p+25=0
a = -2; b = -15; c = +25;
Δ = b2-4ac
Δ = -152-4·(-2)·25
Δ = 425
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$p_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$p_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{425}=\sqrt{25*17}=\sqrt{25}*\sqrt{17}=5\sqrt{17}$$p_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-15)-5\sqrt{17}}{2*-2}=\frac{15-5\sqrt{17}}{-4} $$p_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-15)+5\sqrt{17}}{2*-2}=\frac{15+5\sqrt{17}}{-4} $
| 3(c-3)=2(c-6) | | 2(w-4)=-18 | | 5x+4=3(x–1)+13 | | (1+r)^10=170/90 | | 3x²+12x-15=0 | | 96=(48+6k) | | 3x+2(x+2)=2(2x-5) | | 6x –(3x +8)=16 | | X1+x2+x3=78 | | -3p-2(2-6p)=6(p-5)-22 | | p15=2 | | 8(x+6)=9(x+6) | | 6x²+3x= | | 2*2*2(x+6)=3*2(x+6) | | -4-6p=6p-8 | | 4(3x+6=12 | | 6x²+3x+24= | | 8x-38=-36 | | (5x+1)=21 | | p+2÷5=-7 | | -3p-3=-6.3 | | 90=2+4n | | v/7-2=-5 | | 2x^2+14x=-3-6x^2 | | 36+24+m=99 | | x+2+11=4x-5 | | (x^2-7x)=3-6x^2 | | -15-4p=4p-12-15 | | x^2+6x+3=16 | | 6x+2+4=90 | | 8y-16=48 | | 1x-0.35x=25.35 |