Answer:
[tex]8x^{2} +3x+6[/tex]
Step-by-step explanation:
To find total area, the farmer needs to find add the areas of the two plots.
Area equation can be obtained by summing eqtn 1 to eqtn 2 as below to obtain a single polynomial expression for the area.
a1=[tex]3x^{2} +7x-5[/tex]
a2=[tex]5x^{2} -4x+11[/tex]
Therefore total area is given by:-
[tex](3x^{2} +7x-5)+(5x^{2} -4x+11)\\=8x^{2} +3x+6[/tex]
