Question

What is the value of the coefficient "b" when the quadratic equation y = (2x + 1)(4x − 3) is written in standard form?

Answer 1

I am pretty sure it is -2. Let me show you what I have done.

Answer 2

I'm listening intently :)

Answer 3

(2x+1) (4x-3)
4x-3+8-6x
-2x-3+8x^2
x x
-2-3+8x
-6+8x
x=-2 Yeah? Did I do it right?

Answer 4

....

Answer 5

:|

Answer 6

yes thats right! ^^

Answer 7

Yay!! Thanks :D

Answer 8

Yeah it is. Though method was unknown to me.
(Sorry, my internet isn't at peak condition right now :/ )

Answer 9

thats okay :D