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Anna71 [15]
3 years ago
13

-3a(a? – 10a + 25) =

Mathematics
2 answers:
kramer3 years ago
6 0

Answer:

-3a^{3} +30a^{2} -75a

Step-by-step explanation:

I'm not sure about the question mark so i thought it might have been an a^{2}.

yan [13]3 years ago
4 0

a
2
+
10
a
+
25
Rewrite
25
25
as
5
2
5
2
.
a
2
+
10
a
+
5
2
a
2
+
10
a
+
5
2
Check the middle term by multiplying
2
a
b
2
a
b
and compare this result with the middle term in the original expression.
2
a
b
=
2
⋅
a
⋅
5
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