12.4k views
1 vote
-3a(a? – 10a + 25) =

User Quaternion
by
7.9k points

2 Answers

1 vote

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
User Jeff Mandell
by
8.0k points
5 votes

Answer:


-3a^(3) +30a^(2) -75a

Explanation:

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

User Sijmen Mulder
by
8.8k points

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