SOLUTION: What is the value of the discriminant of the polynomial below? 4x^2 + 7x + 4

Question 145003: What is the value of the discriminant of the polynomial below?
4x^2 + 7x + 4
Found 2 solutions by solver91311, jim_thompson5910:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Your polynomial is in the form , where , , and . The discriminant is the value of the portion of the quadratic formula under the radical. The quadratic formula is: , so the discriminant is: . Just substitute the values for a, b, and c and do the arithmetic.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
From we can see that , , and

Start with the discriminant formula

Plug in , , and

Square to get

Multiply to get

Subtract from to get

So the discriminant is
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