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Genrish500 [490]
4 years ago
9

F(x) = 5x^2 - 8x - 5 what is the value of f(10) ?

Mathematics
1 answer:
Dominik [7]4 years ago
8 0
<span>f '(x) = 2(3x2<span> + 5) + 6x(2x - 1)</span></span><span>= 6x2<span> + 10 + 12x</span>2<span> - 6x</span></span><span>= 18x2<span> - 6x + 10</span></span>
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The correct answer is:  " 784 in² " . 
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                  {or; write as:  " 784 sq. inches " .}.
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      When the side is doubled (in this case, 4 is doubled; 4 * 2 = 8} ; the area is increased by 2² times; that is, by 4 times;  so, the area is:
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