Follow PEMDAS.
Parenthesis
Exponents
Multiplication & Division
Addition & Subtraction
Alright, do multiplication first, then division. Then, do subtraction then addition.

Hope this helped!
Answer:
8x^2 - 4x
Step-by-step explanation:
add like terms
Answer:
the answer that I got is 867 3/7
Step-by-step explanation:
the formula to find the volume of a sphere is 4/3 pi r³. just find the volume of both the spheres separately and minus them.
Answer:
19
Step-by-step explanation:
f(x) = 3x^2-3x + 1
Let x = -2
f(-2) = 3( -2)^2-3*-2 + 1
= 3 * 4+6+1
= 12 +6+1
= 19