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qwelly [4]
3 years ago
14

PLEASE HEP FAST: For f(x)=2x+1 and g(x)=x^2-7 fins (f o g)(x)

Mathematics
2 answers:
Tanya [424]3 years ago
4 0

(2x + 1) \times ( {x }^{2}  - 7) \\ =  2x( {x}^{2} ) + 2x( - 7) + 1( {x}^{2} ) + 1( - 7) \\  = 2 {x}^{3}  + ( - 14x) +  {x}^{2}  + ( - 7) \\  = 2 {x}^{3}  - 14x +  {x}^{2}  - 7 \\  = 2 {x}^{3}  +  {x}^{2}  - 14x - 7
The answer is B.
Arte-miy333 [17]3 years ago
3 0

The correct answer is B.

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