Question

When the quadratic equation y = (x − 4)(2x + 5) is written in standard form, what is the value of the coefficient "b"?

2

3

−3

−20

Answer 1

Well 1st up can u solve y = (x-4)(2x+5) and find the product? :)

Answer 2

y = 2x^2 - 3x- 20

Answer 3

?

Answer 4

Yes.

so 2x^2 -3x - 20 is of the form ax^2 + bx + c.

If u can find value of b now?

Answer 5

yes thanks i didnt realize how simple that wa

Answer 6

was