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What equation results from completing the square and then factoring? x2 + 6x = 13
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What equation results from completing the square and then factoring? x2 + 6x = 13
asked
Jun 17, 2018
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5
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What equation results from completing the square and then factoring? x2 + 6x = 13
Mathematics
high-school
James Casey
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James Casey
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1
Answer
5
votes
Step 1: Subtract 13 from both sides.
x^2+
6x
−13
=
13−13
x^2
+
6x
−13
=0
Step 2: Use quadratic formula with a=1, b=6, c=-13.
x=
−b
±
√
b2
−
4a
c
2a
x=
−
(6)
±
√
(6)
2
−
4
(1)
(
−13
)
2
(1)
x=
−6
±
√88
2
x=
−3
+
√22
or
x
=
−3
−
√22
Answer would be
x=
−3
+
√22
or
x
=
−3
−
√
22
Mcalex
answered
Jun 22, 2018
by
Mcalex
9.4k
points
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