Question

What is the value of b2 - 4ac for the following equation?

x 2 + 5x + 4 = 0

a) 9
b) 16
c) 25

Answer 1

a = 1, b = 5, c = 4.

Answer 2

x 2 + 5x + 4 = 0
A B C
1 5 4
so
5^2-4*1*4
25-16=?

Answer 3

9 lol

Answer 4

just remember a quadratic equation in standard for is

ax^2+bx+c

notice how the x's exponent decreases

ax^2+bx^0+cx^0


x^0 is actually 1 but not when x=0 it's undefined

Answer 5

wait where is A, B, and C coming from?

Answer 6

it just the standard form

Answer 7

just look at it like templates

Answer 8

ohhhhh wow I feel stupid sry thanks

Answer 9

like if you remember y=mx+b

you can say ax+b=y

y=ax+b

but just tradionally y=mx+b

and traditionally and more logically

y=ax^2+bx+c