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Alex73 [517]
3 years ago
14

Brainliest? help please-

Mathematics
2 answers:
ch4aika [34]3 years ago
5 0
Answer: 81

To get this answer, you do two things
1) Take half of the x coefficient 18 to get 9
2) Square the result from the previous step to get 9^2 = 9*9 = 81

This value is added on to get x^2+18x+81 which factors to (x+9)^2 confirming we have a perfect square trinomial
jok3333 [9.3K]3 years ago
3 0
X would become 1 to the second power witch is 2 spit will be 20x
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