To find the quadratic function of 8x^2 + 20x - 28, we can use the general form of a quadratic function, which is:
f(x) = ax^2 + bx + c
For the given expression, we have:
a = 8
b = 20
c = -28
Plugging these values into the general form, we get:
f(x) = 8x^2 + 20x - 28
So, the quadratic function of 8x^2 + 20x - 28 is f(x) = 8x^2 + 20x - 28.
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