1. Value of c that will make the trinomial x²-20x+c a perfect square
2. Product of the roots of 2x²+x-3=0
3.Roots of the quadratic equation 5x²-125=0
4.Value of the discriminant in 2x²+6x-3=0
5. Simplify: -5+√5²-4(3)(-2)÷2(3)
a.3/2
b.1/3
c.±5
d.60
e.100
help please.
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