The value of X is either -1 or 7. By using distance formula.
Answer:
I can't solve and show it but only tell a method to do it!
So find the zero of the given factor:
i.e.

Now put its value (-1) in the polynomial

Now if the answer comes zero it is a factor.
You'll get your answer!
Answer:
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Step-by-step explanation:
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Answer:
your answer well most likely be 7/20 or 1/2
(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)