The roots of f(x) = 2x^2
+ 8x + 13 are
and
The vertex of the parabola is
at

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25

Bobs burgers bam has a special deal of 4 hamburgers for $6. at that rate, how much should it cost to buy 3 hamburgers?

Perform the indicated operation. y^2 + 3y - 10 / 3y + 15