exam
Maths Puzzle
Numerical Ability
y=3(x+5)(x-2)
Which of the following formulas is equivalent to the this one?
a. y=3x^2+9x-30
b. y=x^2+3x-10
c. y=3x^2+3x-10
d. y=3x^2+3x-30
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exam Other Question
If the zeros of the polynomial x^3-9x^2-54x+c=0 form a geometric progression, then c=(?).
(2n+2)(2n-2)