solve for the polynomial equation by factoring, then using the zero product principle. This is just the example problem Please explain where the 3 comes in. I'm so lost- and I'm using the example to help me solve the question I'm doing.

  -3 comes from combining 1 and -4

Step-by-step explanation:

The -3 under the radical is the result of combining the terms

  16 -4(16) = 16(1 -4) = 16(-3) = -3(16)

16 is factored out. It is done this way because 16 is a perfect square factor, so wants to maintain that identity while you figure out the rest of the radical.

if this is really you s much. i only have 3 points left and i have 2 questions to ask

b mark me branliest thx

step-by-step explanation: