Solving Quadratic Equations By The Quadratic Formula Worksheet Page 13
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16Practice Problems
Solve by using the quadratic equation.
Step 1:
Simplify
each side if needed.
This quadratic equation is already simplified.
Step 2:
Write in standard form
if needed.
x
*Inverse of add. 7
and 20 is sub.
x
7
and 20
*Quad. eq. in standard form
Step 3:
Identify a, b, and
c.
a,
x
the number in front of
squared, is 3.
b
x
, the number in front of
, is -7.
c
, the constant, is -20.
13
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