Given (f)x= 5x+4 and g(x)= 3x-8, find f*g?
回答 (5)
2009-07-19 2:55 pm
✔ 最佳答案
(f)x= 5x+4 and g(x)= 3x-8f(g(x))=f(3x-8)=5(3x-8)+4
=15x-40+4
=15x-36
2009-07-19 3:03 pm
5x+4 * 3x-8
15x^2 +12x -40x -32
15x^2 - 28x -32
15x^2 +12x -40x -32
15x^2 - 28x -32
2009-07-19 3:04 pm
f*g=(5x+4)(3x-8)
=15x^2-28x-32 answer//
=15x^2-28x-32 answer//
2009-07-19 3:04 pm
f(x) = 5x + 4
g(x) = 3x - 8
f(x) â (f * g)(x) = f(x)[g(x)]
f(x)[g(x)] = (5x + 4)(3x - 8)
f(x)[g(x)] = 5x(3x) - 5x(8) + 4(3x) - 4(8)
f(x)[g(x)] = 15x^2 - 40x + 12x - 32
f(x)[g(x)] = 15x^2 - 28x - 32
g(x) = 3x - 8
f(x) â (f * g)(x) = f(x)[g(x)]
f(x)[g(x)] = (5x + 4)(3x - 8)
f(x)[g(x)] = 5x(3x) - 5x(8) + 4(3x) - 4(8)
f(x)[g(x)] = 15x^2 - 40x + 12x - 32
f(x)[g(x)] = 15x^2 - 28x - 32
2009-07-19 2:58 pm
(f)x= 5x+4 and g(x)= 3x-8
f(g(x))=f(3x-8)=5(3x-8)+4
=15x-40+4
=15x-36
f(g(x))=f(3x-8)=5(3x-8)+4
=15x-40+4
=15x-36
收錄日期: 2021-05-01 12:39:42
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