MATH
posted by mace on .
Y^3+Y^24Y4 AND T^2+4Z^2 THESE ARE FACTORING QUESTIONS CAN SOME ONE PLEASE SHOW ME THE STEP ON HOW TO SOLVE THESE TWO PROBLEMS

y^3 + y^2  4y  4
factor by grouping the first two and the last two. Be careful with the second grouping because of the _() in front of the 4y.
(y^3 +y^2) + (4y 4)
Take out the common factors:
y^2(y+1) + 4(y+1)
See the y+1?
Write that down once and your other factor is what is left over.
(y+1)(y^24)
You can multiply these factors to check that you did it correctly.
t^2 + 4z^2
This is a sum of two squares and it cannot be factored.
You can factor a difference of two squares. If this was t^2 4z^2
it would factor to (t2z)(t+2z)