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NeTakaya
2 years ago
14

Which of the following are solutions to the equation below (5x+1)^2=7? Check all that apply.

Mathematics
2 answers:
Dahasolnce [82]2 years ago
8 0

Answer:C E (apex) !!


Step-by-step explanation:


stiv31 [10]2 years ago
4 0
(5x+1)² = 7; expand: 25x² + 10x +1 = 7 or 25x² + 10x -6 = 0

Solve this quadratic for x:

x = [-b + √(b² - 4ac)]/2a and x = [-b - √(b² - 4ac)]/2a
Plug the values and you'll find :
x = (- √7 - 1)/5 (answer C)
x = (+√7 -1)/5  (answer E)

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