How do you solve #7+8(3^2-2)#?

2 Answers
Aug 2, 2016

Use the PEMDAS method.

Explanation:

The PEMDAS method is a method of simplifying an expression with multiple operations. PEMDAS stands for:

Parentheses
Exponents
Multiplication
Division
Addition
Subtraction

Let's go through our expression and solve it using this method.

Parentheses

We have #(3^2-2)#:

#3^2=3*3=9-2=7#

Our expression now reads #7+8(7)#.

There are no exponents.

Multiplication

We have #8(7)#.

#8*7=56#

Our equation now reads #7+56#.

There is no division.

Addition

We have #7+56#.

#7+56=63#

#63# is our answer.

Aug 2, 2016

=#63#

Explanation:

First count the number of terms....
Follow the order of operations, doing strongest operations first.

#color(magenta)(7)color(blue)( + 8(color(red)(3^2)-2))" has 2 terms"#

=#color(magenta)(7)color(blue)( + 8(color(red)(9)-2))#

=#color(magenta)(7)color(blue)( + 8(color(red)(7))#

=#color(magenta)(7)color(blue)( +color(red)(56)#

=#63#