exam
Maths Puzzle
Numerical Ability
is 2x-3 a factor of 8x^3-27? Explain why or why not.
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exam Other Question
ok.I must find and simplify each for f(x)=3X^2+5x-8.
a.f(x+h)
b.f(x+h)-f(x)
c.f(x+h)-f(x)
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h
If the sides of a square are decreased by 3cm, the area is decreased by 81 cm^2. What were the dimentions of the original square?
My answer for this one was 15cm by 15cm. Is this correct?
Thanks.