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Question

y=x² -3x -2 

y=x²+10x+25

I need the work to find discrimants and number of real solutions

Answer 1

a=1, b=-3, c=-2, b^2-4ac = (-3)^2-4(1)(-2)= +17>0,

2 real solutions

x=1.5+/-.5sqr17

a=1, b=10, c=25, b^2-4ac= 10^2-4(1)(25) =0

1 real solution

x=-5