SOLUTION: please help ! z^2+z-3

Question 19317: please help !
z^2+z-3
Answer by Alwayscheerful(414) (Show Source): You can put this solution on YOUR website!

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=13 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 1.30277563773199, -2.30277563773199. Here's your graph:

Hope this helps!
RELATED QUESTIONS
Please help me solve this equation: {{ z-4/z-3=z+2/z+1... (answered by edjones)

Please help me solve the question... (answered by Fombitz)

how do you work 10(z+4)-4(z-2)=3(z-1)+2(z-3) please... (answered by ReadingBoosters)

this one is toooo hard 10(z+4)-4(z-2)=3(z-1)+2(z-3) please... (answered by jim_thompson5910)

Please help. z^2-64/z divided by... (answered by jim_thompson5910)

Please help me solve this equation: z+3<1 or... (answered by Fombitz)

Please help solve this equation {{{z-(2+y) }}}. Y=1 and z=... (answered by MathLover1)

Need help please with thus equation : solve for z : z+i^3 =... (answered by rothauserc)

5z+2=z-3 please help me solve this... (answered by jim_thompson5910)