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ollegr [7]
2 years ago
14

Solve the equation using a method other than factoring. Show all your work. x² - 7x + 3 = 0

Mathematics
1 answer:
natka813 [3]2 years ago
5 0
Completing the square

7/2=3.5
3.5^2=12.25
add that to both sides
x<span>²-7x+12.25+3=12.25
factor perfect square
(x-3.5)</span><span>²+3=12.25
minus 3 both sides
(x-3.5)</span><span>²=9.25
square root both sides
x-3.5=+/-√9.25
add 3.5 to both sides
x=3.5+/-√9.25

x=3.5+√9.25 or 3.5-√9.25</span>
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What is the vertex of g(x) = 3x2 − 12x + 7?<br><br> (−6, −5) <br> (−2, −5)<br> (2, −5)<br> (6, −5)
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Answer:

(2, -5)

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