If it's not what You are looking for type in the equation solver your own equation and let us solve it.
7x(5x+3)=-2
We move all terms to the left:
7x(5x+3)-(-2)=0
We add all the numbers together, and all the variables
7x(5x+3)+2=0
We multiply parentheses
35x^2+21x+2=0
a = 35; b = 21; c = +2;
Δ = b2-4ac
Δ = 212-4·35·2
Δ = 161
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(21)-\sqrt{161}}{2*35}=\frac{-21-\sqrt{161}}{70} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(21)+\sqrt{161}}{2*35}=\frac{-21+\sqrt{161}}{70} $
| 25+4x+15=7x-8 | | 7.3=-0.7-x | | (x+3)(x-7)=7 | | -3x(4-x)=2(x-5) | | 210=139-y | | -0.6=x-1.3 | | 3x(x+4)=10 | | -v+78=161 | | 72=287-y | | (x+4)(x+7)+3x-4=4 | | (5x+4)(5x-4)=32 | | 8(a+2=5a+16+3a | | -6(2x+4)+1/2(8+2x)=20 | | 8(x+3)-2x=3x+9 | | 5/4y-10=-15 | | 7/3y-13=-6 | | 89+r=145 | | X2=y3 | | 40200-175m=38800+25m | | 5d+7d=-31 | | (-25)+(-25)+(-25)=-25x3 | | 15x-3=17+5x | | 15x+500=0 | | S(x)=8(1.5^x) | | x-15=2.2 | | x^=0.0001 | | 2(x+1)-(5x-3)=47 | | 2.1=2u-5.9 | | (3a-2)(4a-3)=8 | | 5a(a-4)=4 | | 5/x+8=23 | | m2-8m+10=0 |