Multiply the factors together. You should get the original expression.
For example, if we are to factor
2x^2 + 4x
we would factor as
2x(x + 2).
Check this by multiplying back in
2x*x + 2x*2 = 2x^2 + 4x
which is what we started with, so we know we are correct.
this is your answer, i hope this helps you
Answer:
y = -2
Step-by-step explanation:
y + 4 = 2
y = 2 - 4
y = -2
It would be 30 students from his class roster because not every kid would have his math class in the other options.