Question 231174
I have no idea how to do this. 
f(x)=xroot2-6x+4, g(x)=-x-1 
I need to find f+g, f-g, f.g and f/g
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f+g = xsqrt(2)-6x+4 + -x-1 = (sqrt(2)-7)x+3
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f-g = xsqrt(2)-6x+4 -(-x-1)
f-g = (sqrt(2)-5)x + 5
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To get f*g multiply f and g
To get f/g divide
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Cheers,
Stan H.