f(b) = 7b^3 +8b and g(b) = b ^2+ b – 10. What is f(b)-g(b)?

Question

f(b) = 7b^3 +8b and g(b) = b ^2+ b – 10. What is f(b)-g(b)?

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Ladonna 5 years 2021-08-06T10:53:35+00:00 2 Answers 18 views 0

Answers ( )

  1. diemkieu
    0
    2021-08-06T10:54:58+00:00
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    Answer:

    { \bf{f(b) - g(b) : }} \\ { \tt{ = ( {7b}^{3} + 8b) - ( {b}^{2} + b - 10)}} \\ = ( {7b}^{3} - {b}^{2} + 7b + 10)

  2. giabao
    0
    2021-08-06T10:55:13+00:00
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    Answer:

    f(b) - g(b) = 7b^3 -b^2 + 7b +10

    Step-by-step explanation:

    f(b) = 7b^3 + 8b \\\\g(b) = b^2 + b - 10\\\\f(b) - g(b) = (7b^3 + 8b ) - ( b^2 + b -10)

                   = 7b^3 + 8b - b^2 - b + 10\\\\=7b^3 - b^2 +7b + 10

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