Answer:
10
Step-by-step explanation:
20 divided by 4 = 5 and times it from there
Answer:
yes
Step-by-step explanation:
you put answer in end
Answer:
0.960
Step-by-step explanation:
Answer:
(a) 
(b) 
Step-by-step explanation:
Given

Solving (a): Simplify

Open brackets

Collect Like Terms

Simplify Like Terms

Solving (b): Simplify when a = 2 and b = -1





Hence:
