Wednesday

September 17, 2014

September 17, 2014

Posted by **mace** on Thursday, February 21, 2013 at 7:58pm.

- MATH -
**JJ**, Thursday, February 21, 2013 at 8:18pmy^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)

**Answer this Question**

**Related Questions**

Algebra - Can someone please help me with math problem and explain to me step by...

math-radical equations - Here's one of the questions I have problems with: cube ...

math-radical equations - Here's one of the questions I have problems with: cube ...

Math - I need help with these three problems. They are on a Study Guide and I ...

math - I need help with these three problems. They are on a Study Guide and I ...

Math - I need help with these three problems. They are on a Study Guide and I ...

MATH - USE THE AC METHOD FACTORING 9+^2+5+-4 CAN SOME ONE SHOW ME THE STEP TO ...

math - how do you solve these problems? 1.2x/3 + 1/3 - x/8= 2/3 2. 3n + 9/10 + ...

Math- Negative and Zero Exponents - Please show step-by-step how I am supposed ...

Math - Can you please explain step by step on how to do each of these two ...