1. Solve 3x^2+7=31 using square roots. 2. Solve x^2-12x=45 by factoring
3. Find the zeros of f(x)=6x^2+9x-6

What are different types of statistical programs

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

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