Question

Choose the best answer from the four choices given. You may use scratch

Answer 1

Answer:

The answer is B.

Step-by-step explanation:

Instead of solving each equation, simply think about it alternatively.

Recall that quadratic equations can also be written as: $(x-a)(x-b)$, where $a$ and $b$ are the solutions.

We know that 1 and -3 are solutions, so we can substitute them in for $a$ and $b$.

Thus, we have:

$(x-(1))(x-(-3))$

$(x-1)(x+3)$

Now, expand:

$x^2+3x-x-3$

$x^2+2x-3$

The answer is B.