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20 votes
Pleas help!!

Solve for x and show your steps. Is the solution extraneous? Check your work to show how you determined if the solution is extraneous or not.

The square root of the quantity 11 x plus 5 end quantity equals 7.

User Thia
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1 Answer

17 votes
17 votes

Answer:

= 7 (square both sides)

11x + 5 = 7² = 49 (subtract 5 from both sides)

11x = 44 (divide both sides by 11)

x = 4

substitute x = 4 into the left side of the equation and if equal to the right side, then it is the solution.

= = = 7 ← equals right side

then x = 4 is the solution

I hope this helps!!

~Karly

User Wswld
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