what is the value 4 squared -2(3x5+1)
a.8
b.1
c.-16
d.-21
what does this mean?
4 squared -2(3x5+1)
what does 3x5 mean?
4^2-2(3*5+1)
= 16-2(16)
= -16
To find the value of the expression 4 squared - 2(3 * 5 + 1), we need to follow the order of operations, which is also known as PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction).
Let's break down the expression step by step:
1. Evaluate the part inside the parentheses: 3 * 5 + 1 = 15 + 1 = 16.
Now the expression becomes: 4 squared - 2(16).
2. Calculate the value of 4 squared: 4 squared = 4 * 4 = 16.
The expression now becomes: 16 - 2(16).
3. Calculate the value of 2 times 16: 2 * 16 = 32.
The expression becomes: 16 - 32.
4. Finally, subtract 32 from 16: 16 - 32 = -16.
Therefore, the value of the expression 4 squared - 2(3 * 5 + 1) is -16.
So, the correct answer is c. -16.