Question

What is the answer to 2x(x-7) - 2x2 = 14? Is it no solution?

Answer 1

distribute 2x by (x-7)
then simplify
it is easy to say

Answer 2

2x^2-14x -2x^2=14
2x^2 cancel
-14x=14
x=-1

Answer 3

convert it to the general form
ax^2+bx+c=0
so it goes like this
0x^2+14x+14=0
2x^2-14x -2x^2=14
find the determinant
b^2-4ac

14^2-0*14=14^2>0 so it has a solution :)