Answer:
Step-The dimensions of the poster board is 12 inches by 19 inches.
What are the dimensions of the poster board?
In order to determine the dimensions, the area of the board has to be known. In order to determine the area, substitute for x in the given equation.
(14²) + (3 x 14) - 10
196 + 42 - 10
= 228
Factors of 228 = 12 and 19by-step explanation: