Work out:
2^3 + root 49
8 + 9
I get 8+7
Oops! A dead brain cell gave me a wrong answer. Thanks, Steve.
To work out this expression, we need to follow the order of operations (also known as PEMDAS or BODMAS). PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). BODMAS is similar, but stands for Brackets, Orders (exponents and roots), Division and Multiplication (from left to right), and Addition and Subtraction (from left to right).
Let's break down the expression step by step:
1. Exponentiation (2^3):
The exponentiation operator (^) raises a number to a certain power. In this case, 2^3 means we need to multiply 2 by itself three times.
2^3 = 2 * 2 * 2 = 8
2. Square root (√):
The square root symbol (√) indicates finding the number that, when multiplied by itself, gives the expression under the radical sign. In this case, we need to find the square root of 49.
√49 = 7
3. Addition (+):
Finally, we add the results from the previous calculations:
8 + 7 = 15
Therefore, the answer to the expression "2^3 + √49" is 15.