Answer:
20
Step-by-step explanation:
1/2(a+b)=180
1/2(6+12)=18
1/2(18)=180
9/9=180/9
=20
6x²-x-12
Use the foil method to multiply each term and then simplify
Answer:
divide 350 by 200
Step-by-step explanation:
Answer:
Simplify the expression: 
Use the exponent power:

Apply the given rules;

Simplify:

then;

Therefore, the simplified expression of
is, 
Answer:f
−
1
(
x
Step-by-step explanation: