Asked by Laruen
Part 3 : Evaluate when x = -2, y = 5
21. 4x + 2y, Answer: 2
22. 3(x) *to the 3rd power*, Answer: -221
23. (x + y) *to the 2nd power*, Answer: 9
24. -4x + 2y, Answer: 18
Please check to see if my answers are correct. Thank You!!! :)
21. 4x + 2y, Answer: 2
22. 3(x) *to the 3rd power*, Answer: -221
23. (x + y) *to the 2nd power*, Answer: 9
24. -4x + 2y, Answer: 18
Please check to see if my answers are correct. Thank You!!! :)
Answers
Answered by
Steve
#21. ok
#22.
3x^3 = 3(-2)^3 = 3(-8) = -24
(3x)^3 = (-6)^3 = -216
Not sure how you came up with -221, since 221 is neither a perfect cube, nor a multiple of 3.
#23. ok
#24. ok
#22.
3x^3 = 3(-2)^3 = 3(-8) = -24
(3x)^3 = (-6)^3 = -216
Not sure how you came up with -221, since 221 is neither a perfect cube, nor a multiple of 3.
#23. ok
#24. ok
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