Question

The area of a poster board is x2 + 3x - 10 square inches. Find the dimensions of the poster board if x = 10. (factor the expression )

Answer 1

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: