document.write( "Question 1122435: The distance D km between two ships A and B at time t hours is given by the formula D = 4t^2 - 36t +95. Find the minimum distance between the ships \n" ); document.write( "
Algebra.Com's Answer #738572 by ikleyn(52855)\"\" \"About 
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document.write( "Complete the square\r\n" );
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document.write( "4t^2 - 36t + 95 = \"%282t-9%29%5E2\" - \"9%5E2\" + 95 = \"%282t-9%29%5E2\" + 95 - 81 = \"%282t-9%29%5E2\" + 14.\r\n" );
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document.write( "The term   \"%282t-9%29%5E2\"  is always non-negative, and with positive addend of 14 it never becomes less than 14 kilometers.\r\n" );
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document.write( "Answer.  The minimum distance is 14 kilometers.\r\n" );
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