Choose two values, a and b, each between 8 and 15. Show how to use the identity a3 + b3 = (a + b)(a2 − ab + b2) to calculate the sum of the cubes of your numbers without using a calculator.

see explanation

Step-by-step explanation:

let a = 9 and b = 12 , then

9³ + 12³

= (9 + 12)(9² - 9(12) + 12²)

= 21(81 - 108 + 144)

= 21 × 117

= 2457

substitute,

circle 1 = 5

circle 2 = 20

circle 3 = 44

in this case no matter how you add, you will always get a perfect square..

hence proved

happy to

pls mark as brainliest

280 degrees

step-by-step explanation:

first, take -800 and add it to 360 until you get a positive number