If it's not what You are looking for type in the equation solver your own equation and let us solve it.
8(x2-5)=7x+2
We move all terms to the left:
8(x2-5)-(7x+2)=0
We add all the numbers together, and all the variables
8(+x^2-5)-(7x+2)=0
We multiply parentheses
8x^2-(7x+2)-40=0
We get rid of parentheses
8x^2-7x-2-40=0
We add all the numbers together, and all the variables
8x^2-7x-42=0
a = 8; b = -7; c = -42;
Δ = b2-4ac
Δ = -72-4·8·(-42)
Δ = 1393
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{-(-7)-\sqrt{1393}}{2*8}=\frac{7-\sqrt{1393}}{16} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+\sqrt{1393}}{2*8}=\frac{7+\sqrt{1393}}{16} $
| 2w+9=w+21 | | 2x+5=-1-x | | -3x+14=2(x+2) | | 8(-5+v)=€6 | | |4+2n|=4 | | N-2=-3n+14 | | 5/v=8/2 | | 3x-6+2x+2=16 | | x(x+1)^2(x-2)=72 | | -4(4x-3)=-16x+12 | | 7(1–2x)–3=4–2x | | v9+ 45=51 | | 16x-8=14x+14 | | 5y-8+y=-(y-8) | | −7(1+6x)=161 | | 1|2x+1|2x=x+1 | | (2x-9)+(11x-31)=(6x+26) | | 5(3-7x)=15+7x | | -r+9-2r=-3r+5 | | 24+6=6(5x+8) | | 4.9+10m=8.12 | | 3q+5q=5+4q | | 4n-8=-8n+12 | | 25x+40x=-12 | | -10x-1=-5 | | 9+8x=13x+2 | | n-3/4+n+5/7=15/14 | | 5y-8+y=-(y+8) | | 3x-6+2=16 | | 7/4(x-2)=5/4x+3 | | 94=4+10n | | -8x+3=−8x+3 |