subtract six from both sides to isolate the radical square each side FOIL (x-6)(x-6) add four to each side subtract x from each side to get a quadratic equation. factor your equation solve for each x. possible answers plug in five for x in original problem. square root of one is one add one to six seven does not equal five therefore five is not the answer. plug in eight to the original equation the square root of 4 is two. 2=6=8 8=8 there fore the correct answer is eight. |

square both sides FOIL subtract one from each side subtract x from each side square each side to get rid of the radical subtract four x from each side factor out an x from the equation x=0 solve for x x=4 answers plug four into original equation find square root of 9 which is three 1 does not equal three so 2 is not an answer plug zero into original equation -1 does not equal 1 there is no solution for this equation |