Which of the following best replaces the question mark?
?
6
6
12
4
30
3
56
Answers
Answered by
0
Answer:
The quadratic that is a square and starts with the terms
x
2
and
8
x
is
x
2
+
8
x
+
16
Re-write the given equation with the square quadratic at the beginning
x
2
+
8
x
+
16
−
25
=
0
(
x
+
4
)
2
=
25
x
+
4
=
±
√
25
x
=
−
4
±
5
x
=
−
9
or
x
=
1
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