How do you find (g*h)(x)(gh)(x) given f(x)=x^2-1 and f(x)=x21andg(x)=2x-3 and andh(x)=1-4x#?

1 Answer
Mar 12, 2017

See the entire solution process below:

Explanation:

(g * h)(x) = g(x) * h(x) = (2x - 3) * (1 -4x)(gh)(x)=g(x)h(x)=(2x3)(14x)

(g * h)(x) = (color(red)(2x - 3))(color(blue)(1 -4x))(gh)(x)=(2x3)(14x)

(g * h)(x) = (color(red)(2x) xx color(blue)(1)) - (color(red)(2x) xx color(blue)(4x)) - (color(red)(3) xx color(blue)(1)) + (color(red)(3) xx color(blue)(4x))(gh)(x)=(2x×1)(2x×4x)(3×1)+(3×4x)

(g * h)(x) = 2x - 8x^2 - 3 + 12x(gh)(x)=2x8x23+12x

(g * h)(x) = -8x^2 + 2x + 12x - 3(gh)(x)=8x2+2x+12x3

(g * h)(x) = -8x^2 + (2 + 12)x - 3(gh)(x)=8x2+(2+12)x3

(g * h)(x) = -8x^2 + 14x - 3(gh)(x)=8x2+14x3