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arianasg06
23.12.2019 •
Mathematics
In exercises 18 and 19 determine which solution if any is an extraneous solution 18.sprt(3x-2)=x; x=1,x=2. 19. sprt(x+6=x; x=3,x=-2
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Ответ:
ANSWER
18. No extraneous solution.
19. The extraneous solution is x=-2
EXPLANATION
18. The given radical equation is:
Solving this radical equation yields
We check for an extraneous solution by substituting each value into the equation.
Checking for x=1,
This is true.
Checking for x=2
This is also true. Hence there is no extraneous solution.
19. The given radical equation is:
Solving this equation yields,
Checking for x=3,.
3=3.
This is a true solution.
Checking for x=-2.
Hence x=-2 is an extraneous solution.
Ответ:
4 × 11/6
22/3 ft²