Evaluate the expression when k=-4 |k-2 • |3k|,- 1 a. 72 b. 71 c. 66 d. -73
2 answers:
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Answer:
Yes
Step-by-step explanation:
You can set up your proportion as *
you then multiply across to get
. Since this number is less than 1, it's definitely less than 3.
Answer:
- (d) (x² + y² + z²)³ = 27x²y²z²
Step-by-step explanation:
<u>Use the identity:</u>
- a³ + b³ + c³ = 3abc if a + b + c = 0
<u>Substitute as follows:</u>
- a =
, b =
, c =
<u>The sum of the cubes is:</u>
- x² + y² + z² = 3(xyz)
<u>Cube both sides:</u>
- (x² + y² + z²)³ = 27x²y²z²
Correct choice is (d)