If 2=5 ; 3=9 ; 4=48 ; 5=220; 6=1350 then 8=?

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

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