Question

8. The discriminant of quadratic equation 2x^2+x-4=0 is....​

Answer 1

Step-by-step explanation:

2*2+x+4=0

4+(4-4)x+4=0

4+4x-4x+4=0

4(1+x)-4(x+1)=0

(x+1)(4-1)=0

x+1=0 or, 4-1=3

x=-1

Answer 2

Answer:

b^2-4ac

1+16×2

33

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