Question

When Y=3x² - 5x+7, Find differenteal?​

Answer 1

Answer:

8 is positive

Explanation:

y=3x²–5x–7…first we will get it into parabolic form

y =3(x^2 - (5/3)x + ?) = 7 + 3*?←—-here we will pick a “?” that make the left side a perfect square.

y =3[x^2 - (5/3)x + 25/36] = 7 + 3*(25/36)

y =3[x - (5/6)]^2 = 7 + 75/36

y =3[x - (5/6)]^2 + (9 and 1/12)

Which is a parabola with vertex at [(5/6), 9.08333333333 )] and Axis of Symmetry x = (5/6)

The parabola open upward since 3 is positive.