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Ksivusya [100]
3 years ago
12

The product of some negative number and 10 less than three times that number is 8 . find the num

Mathematics
1 answer:
Oksanka [162]3 years ago
7 0
-x(3x-10)=8
-3x^2+10x=8 (DISTRIBUTE)
-3x^2+10x-8=0 (BALANCE TO ZERO)
(-3x+4)(x-2)=0  (FACTOR)
(-x+4/3)(x-2)=0 (SIMPLIFY)
{x=2 OR x= 4/3}
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Step-by-step explanation:

I think that you type wrongly.

we have f(1) = -5

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with n= 3 we have f(3) = f(2) + 9 = 4 + 9= 13

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