SOLUTION: Given g(x)=2x-3, find g(x+2)-g(x): My solution: find g(x+2) =2(x+2)-3 =2x-1 Since g(x+2)=2x-1, 2x-1-2x-3 2x-2x-1-3 =-1-3 =-4 The answer is supposed to be 4, but I ha

Question 122848: Given g(x)=2x-3, find g(x+2)-g(x):
My solution: find g(x+2)
=2(x+2)-3
=2x-1
Since g(x+2)=2x-1,
2x-1-2x-3
2x-2x-1-3
=-1-3
=-4
The answer is supposed to be 4, but I have -4
Isn't minus 1 minus 3 = minus 4?
=-2
I have a textbook (ISBN 0-321-13193-2)
Title: Basic Technical Mathematics, 8th edition
But the instructor gave us handouts of math functions to solve instead of using the book.
Answer by oscargut(2103) (Show Source): You can put this solution on YOUR website!
I correct your solution then:
Given g(x)=2x-3, find g(x+2)-g(x):
My solution: find g(x+2)
=2(x+2)-3
=2x+1 (look here)
Since g(x+2)=2x+1,
2x+1-(2x-3)
2x-2x+1+3
=1+3
=4

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