Frequent Questions about our Solver

The problem

Click to see the original problem

I don't understand how the -2 turned to -5

Answer provided by our tutors

"-2(p + 1)" has been split into "-5(p + 1) + 3(p + 1)"

You can do this because "-2 = -5 + 3" so

-2(p + 1) = (-5 + 3)(p + 1) = (-5)(p + 1) + 3(p + 1)

← Previous Problem Next Problem →