Question

Does anyone knows how to do this

Answer 1

Answer: -4(x+3)(x+4)

Step-by-step explanation:

first, you want to take out the GCF, which is -4

-4x^2 - 28 - 48

= -4(x^2+7x+12)

then you find two numbers whose product is 12, and whose sum is 7 (3 and 4)

so -4(x^2+7x+12) becomes -4(x+3)(x+4)