Solve.The square painting in the figure measures x inches on each side. The painting is uniformly surrounded by a frame which measures 3 inches on each side. Write a polynomial in descending powers of x which expresses the area of the square that includes the painting and the frame. Then write an expression for the area of the frame. (Hint: The area of the frame is the area of the painting and the frame minus the area of the painting.)
A. x2 + 36; 36
B. x2 + 6x + 9; 6x + 9
C. x2 + 12x + 36; 12x + 36
D. x2 + 9; 9
Answer: C
Mathematics
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