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What number should be added to the expression x^2+4x to change it into a perfect square trinomial? 1 2 4 8

What number should be added to the expression x^2+4x to change it into a perfect square trinomial? 1 2 4 8
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5 votes
What number should be added to the expression x^2+4x to change it into a perfect square trinomial?

1

2

4

8

User Handmdmr
by
7.8k points

2 Answers

4 votes
x² + 4x + 4 = (x+2)²

Answer is 4.

Hope it helps!
User Adam Swinden
by
7.6k points
4 votes
4


x^2+4x+4=(x+2)^2
User Yasd
by
8.1k points
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