exam
Maths Puzzle
Numerical Ability
Find a value for k so that 9m(squared)- kn(squared) will have the factors 3m + 7n and 3m - 7n.
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exam Other Question
Solve the following system by substitution
5x-2y= -5
y-5x=3
15. whats the reciprocal of the number -3/2?