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Elodia [21]
3 years ago
6

1. What are the roots of the equation?

Mathematics
2 answers:
Dima020 [189]3 years ago
5 0

1. factor the left side, divide all terms by 5x, solve all x's for 0

answer is A. {−7, −2, 0}


2. you would need to add (-9^2) to both sides.  -9^2 = 81, so add 81 to both sides

Harrizon [31]3 years ago
3 0
1) A. since, if you put the numbers into the equation (one at a time) the equation = 0 each time, which is true.
2) I think I've been taught to complete the square slightly differently
x^2 - 18x - 17 = 0
(x-9)^2 - 81 -17 = 0
(x-9)^2 - 98 = 0
I hope you can get something from that
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