Try it like this. it may help: Make it like a rainbow. Find out what all can go into 8 and 14. So kinda like this.
1,2 4 ,8
then just connect it, like a rainbow, hence the name.
Hope that helped!
Answer:
<u><em>-71</em></u>
Step-by-step explanation:
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(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)
Answer:
I think it's A
Step-by-step explanation:
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