Chapter B, Problem 1E

In Exercises 1-32, use your calculator to perform the given calculation. The correct answer is given in brackets []. In your homework, write down what you type to get that answer. Answers are not given in the back of the book.

$-3--5$

To determine

To calculate:

The value of $-3--5$.

Answer to Problem 1E

Solution:

The value of $-3--5$ is $2$.

Explanation of Solution

Approach:

Press $\boxed{(}$ to open bracket and insert values if there are more than one operation to be performed.

Press $\boxed{)}$ to close bracket after value insertion if there are more than one operation to be performed.

Press $\boxed{x^2}$ to calculate square of a number.

Press $\boxed{^}$ to calculate the exponent function.

Press $\boxed{\text{EXP}}$ to calculate the value $10$ raised to the power of the number pressed after this.

Press $\boxed{\sqrt{}}$ to calculate the square root.

Press $\boxed{\times }$ for multiplication.

Press $\boxed{÷}$ for division.

Press $\boxed{+}$ for addition.

Press $\boxed{-}$ for subtraction.

Press $\boxed{(-)}$ to put negative sign before a number.

Press $\boxed{\text{ENTER}}$ to display the output.

The order of calculations should be in the following order:

• Parentheses-enclosed work

• Exponents

• Multiplication and division, from left to right

• Addition and Subtraction, from left to right

Calculation:

In calculator, there are two buttons used in this calculation, subtraction button $\boxed{-}$ and negative button $\boxed{(-)}$.

Calculate the value of the data, by using calculator, by pressing the buttons in the following order:

$\boxed{(-)}3\boxed{-}\boxed{(-)}5\boxed{\text{ENTER}}2$

Therefore, the display of the calculator read $2$.

Conclusion:

Thus, the value of $-3--5$ is $2$.