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

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant

b. f(x) = –√x + 3this is the correct answer