Algebra | Algebra Chapter 5 | Errors | Known Algebra Errors

Algebra Ch5.1 #10x

by | Dec 14, 2017

This is an error in the Algebra Solutions Manual

Mary asked,

In Algebra 1, chapter 5 lesson 1 problem 10x, the answer key says the answer is true for all positive integers.  But isn’t it true for all integers? 1 to the power of x =1.  If it is a negative power, it is still one, right?

Mary
Dr. Callahan Answer:
You are correct. Should be for all real numbers – not just integers. I tend to test these in a calculator to make sure though 😉
So that is incorrect in the Solutions manual.
Just for completeness sake – my goto math tool is Wolfram – so here is there answer.
http://www.wolframalpha.com/input/?i=1%5E(x)+%3D+1
 

Written By DaleCallahan

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