15.
To find this, here is the work in the photo attached:
The formula for the discriminant is b^2-4ac. The formula you wote is in the form of
ax^2+c=0, so first, you need to bring that -2 to the left. When you do that, you get (the original equation would be ax^2+bx+c but you have no bx.)
3x^2-8
So, since there's no b, it would be
b^2-4ac
0^2-4(3)(-8
-12 x -8
96
4x-8=2x+14
subtract 2x on both sides and add 8 on both sides so x=11
Answer:
-36x+114
Step-by-step explanation:
Answer:
8y x 9 ⇒ 72y
Step-by-step explanation:
