If f (x) = x-81 and g (x) = (x-9) - 1 (x+9), find g (x) f (x).

Question

Mathematics

Giovanny Vincent

9 June, 21:38

If f (x) = x-81 and g (x) = (x-9) - 1 (x+9), find g (x) f (x).

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Answers (1)

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Aliya Bradford · Answer 1

F (x) = x²-81

g (x) = (x-9) - 1 (x+9)

= (x-9) - x-9

g (x) • f (x)

= [x²-81 ] • [ (x-9) - x-9 ]

=[ x²-81 ] • [ (x-x - 9-9) ]

= [ x²-81 ] •[0-18]

= [ x²-81] •[ - 18]

= - 18•x² + - 81•-18

= - 18x²+1458

If f (x) = x*-81 and g (x) = (x-9) - 1 (x+9), find g (x) * f (x).

If f (x) = x-81 and g (x) = (x-9) - 1 (x+9), find g (x) f (x).