exam
Maths Puzzle
Numerical Ability
3x-2y+4z x=3/4 y=1/5 z=5/4
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exam Other Question
2x to the third - 10x to the 2nd + 3x - 15
(4 sqrt s + 11 sqrt t)(4 sqrt s - 11 sqrt t)
To me, this is a difference of squares. How is the anser written??