document.write( "Question 86309: im having a hard time with this problem. Find the Domain of g(x) = [x4 -2x3 + 7] / [3x2 – 10x – 8] and f(x) = [x+1]1/2 / x. Can someone help me? \n" ); document.write( "
Algebra.Com's Answer #62408 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Find the Domain of g(x) = [x^4 -2x^3 + 7] / [3x^2 – 10x – 8] \n" ); document.write( "Need to find out when the denominator is zero: \n" ); document.write( "3x^2-10x-8=0 \n" ); document.write( "3x^2-12x+2x-8=0 \n" ); document.write( "3x(x-4)+2(x-4)=0 \n" ); document.write( "(x-4)(3x+2)=0 \n" ); document.write( "x=4 or x=-2/3 \n" ); document.write( "Domain is all real numbers except x=4 and x=-2/3 \n" ); document.write( "====================== \n" ); document.write( "and f(x) = [x+1]^(1/2) / x. \n" ); document.write( "x in the denominator cannot be zero \n" ); document.write( "x+1 must be >=0 \n" ); document.write( "x>=-1 \n" ); document.write( "Domain is all Real Numbers greater than or equal to -1 excluding zero. \n" ); document.write( "=========== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |