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# Maths Help Algebra watch

1. 1. (x^2-1)/(x^2-x-2)

2. The quadratic y^2+xy+2x-3=0 has equal roots. What are the possible value/values of x?

3. What is the discriminant of the quadratic equation 2y^2+5y-1=0?

Thanks.
2. 1)try factorizing the top and bottom and cancel common factors

2)an equation has equal roots if the discriminant =0 (hint:a=1 b=x c=2x-3)

3)this one should be self explanatory, just to clarify for you the discriminant is

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