Question

What is the range of y = -x2 - 2x + 3?

Answer 1

The answer is x2-5 and the reason is that if you carry the two then add the four this is the answer

Answer 2

Answer:

$y = - {x}^{2} - 2x + 3 \\ y = (x + 3)(x - 1) \\ range \: = - 3 \leqslant x \leqslant 1$