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The Quadratic Formula - h1014v1_140
The Quadratic Formula - h1014v1_142
Mathematics Volume 1 of 2
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Algebra
QUADRATIC EQUATIONS
Step 3.
Check the roots.
4
x
2
2
x
2
7
x
4
1
3
2
2
1
3
2
7
1
3
4
1
9
2
1
9
7
3
4
9
18
9
1
9
21
9
22
9
22
9
and,
4
x
2
+ 2 =
x
2
- 7
x
4(-2)
2
+ 2 = (-2)
2
- 7(-2)
4(4) + 2 = 4 -(-14)
16 + 2 = 4 + 14
18 = 18
Thus, the roots check.
Rev. 0
Page 27
MA-02
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