All real numbers greater than or equal to -8. You can see 3 is a minimum point because at 3 the numbers start to increase again. -8 is the lowest number and the function is increasing as x approaches infinity starting at 3.
Answer: x=8 or x=-2
Step-by-step explanation:
It would be the first option on the test.
You should subtract 25 on both sides to get this equation x^2-6x-16 in order to factor. There are three multiplication equations to get to the number 16 which is 1*16, 2*8, and 4*4. 1*16 wouldn't work since you would get either 17, 15 or -15, 4*4 would also not work since you would get +/-8 or 0, which would finalize our two numbers 2 and 8.
Since the c value is negative you would need to get one of your numbers negative which would be -8 since -8 + 2 = -6 which would factor out to (x-8)(x+2). Subtract -8 and 2 for each x values to get 8 and -2.
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Step-by-step explanation
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