one of the factors of x² + 121 is
Answers
Answered by
0
Answer:
7
Step-by-step explanation:
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Answered by
1
Step-by-step explanation:
Move the constant to the left and change its sign
x
2
−
121
=
0
Using
a
2
−
b
2
=
(
a
−
b
)
(
a
+
b
)
, Factor the expression
(
x
−
11
)
(
x
+
11
)
=
0
When the product of factors equals 0, at least one factor is 0
x
−
11
=
0
x
+
11
=
0
Solve both equations for
x
x
=
11
x
=
−
11
The final solutions are
∴
x
1
=
−
11
,
x
2
=
11
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