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djverab [1.8K]
3 years ago
15

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

Mathematics
1 answer:
Firlakuza [10]3 years ago
8 0
The answer is (x+1)²= x²+2x+1
so x^2 + 2x must be added 1 to become  x²+2x+1=<span>(x+1)²</span>
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