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Maths Puzzle
Numerical Ability
Please help me solve this I do not understand how to do it.
Factor the polynomial 27x^3 - 8y^3.
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book Other Question
Solve the system of equations and state if it has no solution or infinite number of solutions
2x-2y+3z=4
x-3y+2z=2
x+y+z=1
solve
Seventy two students are separated into two groups.the first group is 5 times as large as the second. How many students are in each group?