Solve
X²+14x+9
25m²-20mn+4n²
Answers
Answered by
0
Answer:
Explanation:
One way is to complete the square and use the difference of squares identity:
a
2
−
b
2
=
(
a
−
b
)
(
a
+
b
)
with
a
=
(
x
−
7
)
and
b
=
2
√
10
as follows:
x
2
−
14
x
+
9
=
(
x
−
7
)
2
−
7
2
+
9
=
(
x
−
7
)
2
−
40
=
(
x
−
7
)
2
−
2
2
⋅
10
=
(
x
−
7
)
2
−
(
2
√
10
)
2
=
(
(
x
−
7
)
−
2
√
10
)
(
(
x
−
7
)
+
2
√
10
)
=
(
x
−
7
−
2
√
10
)
(
x
−
7
+
2
√
10
)
Answered by
0
Answer:
The answer is (x-(-2√10-7)) - (x-(√10-7))
Step-by-step explanation:
i think it help you
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