Question

Solve x^2 – 3x – 28 = 0 by factoring. What is the solution set?


{7, 4}

{7, –4}


{–7, 4}


{–7, –4}

Answer 1

can you factor this/
you need 2 numbers whose product is -28 and whose sum is -3

Answer 2

these 2 numbers will be the value of a and b in
(x + a)(x + b) = 0

Answer 3

think of the factors of -28
the possibilities are
-7 and 4
and
7 and -4