Curves:
quadratic
Choose values for a, b and x and observe the values of
y = ax
2
+b
a =
b =
start from x =
x
x
2
ax
2
+b
Use this table to solve:
2x
2
+1 = 73
x=
3x
2
- 2 = 46
x=
4x
2
+8 = 108
x=
-x
2
+ 1 = -48
x=
x
2
- 60 = 61
x=
What you should understand
Equations like those above that you had to solve are called
quadratic equations
. There are usually 2 possible answers for each one.
