Problema Solution
1) Are the expressions 2x to the third power and (2x) to the third power equivalent? Explain your answer.
2) Is the operation of raising to a power comunitiative? That is, is a to the b power = to b to thhe a power? Explain why or why not.
3) Explain why 2 raised to the -3 power is not equal to -8.
Answer provided by our tutors
1) Are the expressions 2x to the third power and (2x) to the third power equivalent? Explain your answer.
No they aren't. When (2x) is in parenthesis it means the 2 and the x are raised to the third power. When it is written as just 2x to the third power, only the x is raised to the third.
2) Is the operation of raising to a power comunitiative? That is, is a to the b power = to b to thhe a power? Explain why or why not.
No it is not. Because if I have 4 to the fifth power that means 4*4*4*4*4 = 1,024. To flip it, 5 to the fourth power is 5*5*5*5 = 625.
3) Explain why 2 raised to the -3 power is not equal to -8.
2 raised to the third power is the same as 1/(2)3 which equals 1/8. The negative expoent means we are going to have a number less than 1.