12. Find the area of the shaded region. S(x) = -x' + x +16x 30+ 20 g(x) =-4x (4, 16) 10+ (0, 0) -4 -2 4 6. (-3, -12) -20+ -30+ 12 + 16x 나 -3 4 나 4 3. + X LoX -- X 6x2 3. [o O - 9) - 54)] + [-l04 + 9 -(-1) + () - t. 297,440 12 12 -| 937 12
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I have a question about the signs being used here. When the function is in quadrant 3, is g(x) supposed to be positive and f(x) also supposed to change signs? I was confused why 4x was not negative in the first part of work shown, but we subtracted it from 16x.
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