Answer:
A. [tex]-W^{2} +6W+17[/tex]
B. [tex]5W^{2} +14W+7[/tex]
Step-by-step explanation:
A. To find expression that will represent additional area of Jocelyn's village we will subtract area of Lorlesha's village from area of Jocelyn's village.
[tex]2W^{2} +10W+12-(3W^{2} +4W-5)[/tex]
[tex]2W^{2} +10W+12-3W^{2} -4W+5[/tex]
[tex]-W^{2} +6W+17[/tex]
Therefore, expression [tex]-W^{2} +6W+17[/tex] represents additional area of Jocelyn's village.
B. To find expression that will represent combined total area of Jocelyn and Lorlesha's village we will add both expressions that represent areas of both villages.
[tex]2W^{2} +10W+12+(3W^{2} +4W-5)[/tex]
[tex]2W^{2} +10W+12+3W^{2} +4W-5[/tex]
[tex]5W^{2} +14W+7[/tex]
Therefore, expression [tex]5W^{2} +14W+7[/tex] will represent combined total area of both villages.