Question

question:
Your classmate solved
(x+5)(x-1)=2 as follows:

x+5=2 x-1=2
x=2-5 x=2+1
x= -3 x=3

Your teacher said this was wrong because the values did not check. Explain what is wrong with your classmate’s solution.

Answer 1

when x+5=2 and (x+5)(x-1)=2
so x=2-5 =-3 then x-1=-4
so
(x+5)(x-1)=(-3+5)(-3-1)=(+2)(-4)=-8 #2

Answer 2

ok thanks