exam
Maths Puzzle
Numerical Ability
what are the non-permissible values for the rational expression x^2+x-6/x^2+x-12
a. x=2 and x=-3
b. x=3 and x=-4
c. x=0 and x=-4
d. x=0 and x=-2
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exam Other Question
X2 – 2x -15
25 – x2
My question is:
Mary is three years older than her twin brothers. Next year, the sum of the ages will be exactly 102. How old are they now.
The Work I have is:
m=3+b
m+b+w=102
3+b+b+w=102
3+2b+w=102