If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(-z+1)(z-7)=0
We add all the numbers together, and all the variables
(-1z+1)(z-7)=0
We multiply parentheses ..
(-1z^2+7z+z-7)=0
We get rid of parentheses
-1z^2+7z+z-7=0
We add all the numbers together, and all the variables
-1z^2+8z-7=0
a = -1; b = 8; c = -7;
Δ = b2-4ac
Δ = 82-4·(-1)·(-7)
Δ = 36
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$z_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$z_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{36}=6$$z_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(8)-6}{2*-1}=\frac{-14}{-2} =+7 $$z_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(8)+6}{2*-1}=\frac{-2}{-2} =1 $
| -51=1+4(4x-1) | | 4/2x=6/x+2 | | 1/2x+15=32 | | (-z-1)(z+7)=0 | | 40y–40=-40y+40 | | 11+5=3x+1 | | 8n-(2n=5)=13 | | 15+2=39-p | | –4p+10=–3p | | 2x^{2}+2x-1=2x+3 | | 2()k-5+3k=k+6 | | 5w^2+20w=2w+8 | | 14+m/10=24* | | 3(5p-3)=5(p+1 | | 0.6x+0.6=0.9x-1.5 | | 20x-3(20x)=270 | | 10+k=4k–20 | | -16x-x^2+225=0 | | 8y-10=26 | | x+5/10=20 | | 5(2x+8)=2(6x-5) | | -15=8z+7 | | 1/4p+1/4=5.25 | | X=200+3x | | 210+5p=41790 | | 1/2(x+256=180 | | 32=7r-10 | | 2(w+10)=5” | | 8x(17+7)=+(8x7)* | | 6m–3=m+11 | | -5(r+7)=-79 | | 1.5-3x=1.25 |