David is seven years older than his brother ken. Find the expression for a. The sum of their ages b. The sum of their ages in ten years to...

      

David is seven years older than his brother ken. Find the expression for
a. The sum of their ages
b. The sum of their ages in ten years to come.
c. The product of their ages four years ago

  

Answers


joseph
a. Let Ken be represented by x
David = x+ 7
The sum of their ages x + x+7 =2x + 7
b. The sum of their ages 10 years to come
Ken = x +10
David = x+7 +10
Total sum =x +10 +x + 17
=2x +27 years
c. (x-4) (x +7 -4) =(x-4) (x+3)
=x^2- x - 12

joseph rimiru answered the question on October 22, 2017 at 05:08


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