Answer:
A
Step-by-step explanation:
64 Coz they have been adding those numbers.
Last one:
x^3-2^9=
(x-8)(x^2+64+8x)
so it will end up at 6y-6
you need to combine everything that does not have an exponent (example. a, x, y) and you combine the ones that have exponents together. and therefore you get 6y-6 (remember positive and negative signs)
Answer:
790
Step-by-step explanation:
Multiply, Determine the sign and evaluate, Add up everything, multiply everything that's left, by doing everything correctly you should get 790
