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Integral from 0 to 4 of absolute value of (x^2 -4x +3) dx. I keep getting 4/3 and not 4...? 23=*-9;*=14? If there are 4- forces of nature, why not one ? who can finish the work of Einstein ? HELP MATH SIMPLIFY THE COMPLEX FRACTION? The magnitude of the inclined reaction R1 at "A" would be what in lbs?