Answer:
(a) Expanded form:

(b) The value of the expression: -21
Step-by-step explanation:
Given

Solving (a): The expanded form:
This means that we substitute the values of i from 1 to 4 in the above expression.
So, the expression becomes:

Solving (b): The value of the expression
To do this, we simply substitute the given values of X1, X2....... in the expression.
This gives:
So, the expression becomes:

Simplify each bracket



<em>Hence, the result of the expression is -21</em>
Answer:
I don't know search it up I picked B
okay it's 5 and I'm
Answer:
15920 is the amount reserving seats but there is multiple answers
Step-by-step explanation:
Answer:
199 if it's 7b^3 + 10
9271 if it's (7b)^3 + 10
Step-by-step explanation:
You just substitute the 3 in for d. If your expression was 7b^3 + 10, then only b is being raised to 3.
So 3^3 is 27, 27*7 is 189, 189+10 is 199.
If the expression was (7b)^3 + 10, then first you multiply 7 and 3 to get 21. Then you raise 21 to the power of 3, which is 9261. Then you add 10, which is 9271.