Because you are just adding the same variable to itself, the variable does not change.
in the same way that 2 + 2 is 4, 2x2 + 2x2 is 4x2.
The expression 2x squared plus 2x squared simplifies to 4x squared. This is because when you add like terms with the same variable and exponent, you add the coefficients while keeping the variable and exponent the same. In this case, the coefficients of both terms are 2, so when you add them together, you get 4. The variable x and the exponent 2 remain the same in the simplified expression.
-x2+2x
use the calculator
It is: 4x squared
2x2 + 2x = 2x(x+1)
4
7x2 -4x -5x2 +2x = 2x2 -2x
(2x+3)(2x+4)
(2x+3)(x+3)
(x + 1)(2x + 5)
(2x + 1)(x + 2)
(2x+10)(x+4)
Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.