SOLUTION: x^2+21=10x x^2-10x+21=0 (x-7)(x-3)=0 x-7 and x=3 My teacher said this is wrong and I need to factor it. Please help. Thanks!

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: x^2+21=10x x^2-10x+21=0 (x-7)(x-3)=0 x-7 and x=3 My teacher said this is wrong and I need to factor it. Please help. Thanks!      Log On


   

Question 181890This question is from textbook
: x^2+21=10x
x^2-10x+21=0
(x-7)(x-3)=0
x-7 and x=3
My teacher said this is wrong and I need to factor it. Please help. Thanks! This question is from textbook

Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Everything you did is correct, except the following:
x^2+21=10x
x^2-10x+21=0
(x-7)(x-3)=0
x-7 and x=3 <<--typo here, should be x=7