Simplifying Polynomial Expressions 109
Step 2. Do multiplication: (^2) ()xx^2 + 212 xx
= 24 xx^2 ++ 4 + 2
Step 3. Review the main steps.
(^2) ()x (^112222) ()x^222 x+ 111 22222 xx^22 + 42 x
Exercise 10
Simplify.
- 822 ()− 5
- − 7 ()yy− 44 )++ 99
- 10 xy−xyx() 5355 y x 44 x^2
- ()))(()( +()(^2
- 34 x^2 xxx 555 [([(xxxx 2222 − 8 )]
- −x()x+ )+ 5 ()x−
- ())))))((((()( −()( )))((()(
- 5 x^22 () 333 xyyyy 222 2
- x^2 [( 2 xxx xx 3 x− 161 )])] x
- ()^25 y )(()y^32 ))()(()y)) 11115555 xy^32 ((((()( y^6