### Home > CC2MN > Chapter cc29 > Lesson cc29.2.3 > Problem 9-80

9-80.

Simplify each of the following expressions. Homework Help ✎

8

^{2}+ 7^{2}7

^{2}· 7 · 7(2

^{2}+ 6)^{2}−4 · 3

^{2}− 2*x*−*x*3 · 3 ÷ 3

4

*x*+*x*− 2*x*−2 · 4 ÷ 4

Use the Order of Operations.

64 + 49

113

How can you combine these?

7^{4} = 2401

Use the same method as part (a).

(4 + 6)^{2}

(10)^{2}

100

Use the Order of Operations.

What do you get when you subtract any number from itself?

0

Start from the left and work your way to the right.

3

Combine like terms.

3*x*

See part (g).