exam
Maths Puzzle
Numerical Ability
How do you factor 4x^2+9y^2?
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exam Other Question
write -2(sqrt3) - 2i in trigonometric form, then find (-2(sqrt)-2i)^4
28. Who picked These People? Sometimes, instead of selecting a sample to survey, some polling agencies ask people to call a telephone number and give their response to a question.