chivitogomez2400
10.12.2021 •
Mathematics
A shopper at a clearance sale is pleased to discover some antique writing desks on sale for $2,480 each. The original price tags read $3,968. What is the discount, as a percentage? Round your answer to the nearest percent and include a percent sign (%).
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Ответ:
k = -18
Step-by-step explanation:
If x-3 is a factor, what this means is that if we substitute;
x = 3 into the equation, we should get 0
This is from the factor theorem
Thus ;
P(3) = 0 = 2(3)^3 -5(3)^2 + 3(3) + k
0 = 54 - 45 + 9 + k
k + 18 = 0
k = -18