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Help plsssssssssssssssssssss

Help plsssssssssssssssssssss-example-1
User Guyd
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1 Answer

3 votes

Answer:

Question 10:

Answer: b.


{ \tt{f(x) = 5 {x}^(2) + 9x - 4}} \\ { \tt{g(x) = - {8x}^(2) - 3x - 4 }}

(f + g)x, add f(x) and g(x):


{ \tt{(f + g)x = (5 - 8) {x}^(2) + (9 - 3)x - 4 - 4}} \\ { \tt{(f + g)x = - 3 {x}^(2) + 6x - 8}}

Question 11:

Answer: a.

In relation with solution of question 10, same procedure:


{ \tt{(f - g)x = - 3 {x}^(3) + (1 - 2) {x}^(2) + ( - 3 - 4)x + 9 - ( - 9)}} \\ { \tt{(f - g)x = - 3 {x}^(3) - {x}^(2) - 7x + 18 }}

User Kfir
by
7.0k points
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