# MATH

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Y^3+Y^2-4Y-4 AND T^2+4Z^2 THESE ARE FACTORING QUESTIONS CAN SOME ONE PLEASE SHOW ME THE STEP ON HOW TO SOLVE THESE TWO PROBLEMS

• MATH -

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^2-4)

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 (t-2z)(t+2z)

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