224 = (10+2x)(12+2x)
224 = 120 + 44x + 4x2
4x2 + 44x - 104 = 0
The quadratic formula gives x = 2 and an extraneous root.
Alyssa N.
asked 12/05/19A 10x12 inch painting has a frame of uniform width. Whats the width of the frame if the entire piece, including the frame, covers an area of 224in?
224 = (10+2x)(12+2x)
224 = 120 + 44x + 4x2
4x2 + 44x - 104 = 0
The quadratic formula gives x = 2 and an extraneous root.
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