exam Maths Puzzle Numerical Ability

Find the indicated outputs for f(x)=5x squared - 5x.

f(0)=
f(-1) =
f(2) =

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exam Other Question

Triangle ABC is a right triangle. The measure of one of the acute angles is 36 degree more than the measure of the other acute angle. What is the measure of the smallest angle in triangle ABC? Solve the system: x - 5y = -9
x = y - 1
One of the solutions is :

a) x = 1
b) x = -1
c) y = -2
d) y = 2
e) none of the above