document.write( "Question 45061: Please help to show the work.\r
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\n" ); document.write( "\n" ); document.write( "(1)Compute (a) (f+g)x, (b)(f*g)x, and f(g(x)) given f(x)= x^2-1 and g(x)=x+2.\r
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Algebra.Com's Answer #29892 by Nate(3500) $\"\"$ $\"About$

You can put this solution on YOUR website!
f(x) = x^2 - 1 and g(x) = x + 2
\n" ); document.write( "(f + g)x = x^2 - 1 + x + 2
\n" ); document.write( "(f + g)x = x^2 + x + 1
\n" ); document.write( "(f * g)x = (x^2 - 1)(x + 2)
\n" ); document.write( "(f * g)x = x^3 + 2x^2 - x - 2
\n" ); document.write( "f[g(x)] = (x + 2)^2 - 1
\n" ); document.write( "f[g(x)] = x^2 + 4x + 3 \n" ); document.write( "

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