If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4a^2+42a-270=0
a = 4; b = 42; c = -270;
Δ = b2-4ac
Δ = 422-4·4·(-270)
Δ = 6084
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{6084}=78$$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(42)-78}{2*4}=\frac{-120}{8} =-15 $$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(42)+78}{2*4}=\frac{36}{8} =4+1/2 $
| 2c-(1c+3)=-3c+9 | | 390-5q=210+q | | 9/13d=27/36 | | 7÷8x=4 | | 2x-4x=90 | | -2(1x+1)=3(1x+1) | | 4a^2+42a+270=0 | | -7x-14=-2(5x+1) | | 72x-16x=-9+74x | | 12=2q+2 | | 12=68-4q | | a) 3X+4Y=95X+2Y=15 | | --5a=42 | | X+3-2x+6=1 | | 4a^2+52a-231=0 | | 4+6x=7×-5 | | 4a^2+52-231=0 | | 1/2(x+12)=1/3 | | -3/2x+2=-1/4 | | 9+5v=4+5v-1 | | X+3-x-3=1 | | 1.6x0.25x=0.5x | | p+12=−14p−58 | | 3t^2+13t-9=0 | | 0.5x=1.6x0.25x | | -4b-8=-2+6 | | -2x-15=4-7x+6 | | 1/x-3-1/x+3=1/x^2-9 | | (x+0.75)=5/8 | | (x+5`/2)0.75=5/8 | | 1+x+5=-2+2x | | 20-2(x+4)=19(x+5)-56 |