kitt90335
19.03.2020 •
Mathematics
PLEASE HELP!
Given that f(x) = 5x2 + 2x – 3, g(x) = 6x – 3, and h(x) = 2x + 9 find each function.
(f • g)(x)
A. 30x3 – 3x2 – 24x + 9
B. 15x3 – 3x2 – 24x + 9
C. 30x3 + 24x2 – 18x + 9
D. 15x3 – 3x2 + 24x – 9
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Ответ:
A.30x3-3x2-24x+9
Step-by-step explanation
1. Separate the terms in g(x). (6x) (-3)
2. Distribute by multiplying each term in f(x) by (6x).
(6x)(5x2+2x-3)=30x3+12x2-18x
3. Distribute the other term in g(x) to each term in f(x).
(-3)(5x2+2x-3)= -15x2-6x+9
4. Combine the like terms of both answers.
30x3+12x2-18x-15x2-6x+9= 30x3-3x2-24x+9
Ответ:
Step-by-step explanation: