Show how to use the identity below to calculate the sum of the cubes of your numbers without using a calculator.

a3 +b3 =(a+b)(a2 −ab + b2)

CHOOSE ONE set, A, B, or C to use for the following:

A) a=9 and b=12

B) a=10 and b=14

C) a=11 and b=13

Rewritten as the sum of cubes:



Calculate the sum of the cubes without using a calculator:

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin