Factor this expression completely.

Question

−21x+28


(1 point)
Responses

−7(3x−4)
negative 7 times open paren 3 x minus 4 close paren

−7(3x+4)
negative 7 times open paren 3 x plus 4 close paren

7(3x−4)
7 times open paren 3 x minus 4 close paren

−(21x−4)

Answer 1

To factor the expression \(-21x + 28\) completely, we first find the greatest common factor (GCF) of the coefficients \(-21\) and \(28\). The GCF is \(7\).

Now, we can factor \(7\) out of the expression:

\[ -21x + 28 = -7(3x - 4) \]

Thus, the correct factorization is:

\[ -7(3x - 4) \]

So the response is:

−7(3x−4)