# Algebra

posted by .

This is giving me a lot of trouble.
Factoring Differences of Squares
Factor Completely
98-8w^2
and can you explain how you got the common factor if there is one please

• Algebra -

just recall that a^2-b^2 = (a-b)(a+b)

So, first, make sure that both terms are perfect squares.

In this case, they are not. However, if you factor out a 2, you have

2(49-4w^2)
49 is 7^2 and 4w^2 = (2w)^2. So, we now have

2(7-2w)(7+2w)

## Similar Questions

1. ### Algebra

I'm having trouble working out these problems. Could someone please assist?
2. ### honors algebra II

factoring:: i factored 15A^2B - 10AB^2 into... (15A - 10B)(15A + 10B) am i doing it correctly?
3. ### math,correction

can someone check these for me please.... problem#4 Directions: Factor each polynomial completely by factoring out any common factors and then factor by grouping. Do not combine like terms. 3a^3+3ab^2+2a^2b+2b^3 My answer: (a^2+b^2)(3a+2b) …
4. ### Math!

Factoring Completely! 13b^2-13 I got (13b-13)(1b-1). On my test my teacher said it was party wrong.And she underlined the two Thirteen's i had in my answer. And i don't understand why!?
5. ### Algebra

I have a few more questions that I either need help with or just need checking. Is the algebraic expression a polynomial?
6. ### factoring

Factor x3 + 9x2 + 27x + 27 Factor 8a3 + 60a2b + 150 ab2+ 125b3 I tried doing them, but I just don't get how; perfect squares didn't work and neither did decomposition... someone please help me.
7. ### Algebra: factoring

I need to find the value of x. 9x^3 + 9x = 30x^2 It's confusing because apparently I have to do 9x^3 + 9x and then add the + 30x^2 to it, and then make it equal 0, so it ends up like this: 9x^3 + 9x + 30x^2 = 0 And afterward, I would …
8. ### factor the trinomial by grouping

15x^3-9x^2-6x Can someone please show me how to factor completely.. trying to learn how to do factoring
9. ### Algebra (factoring)

Factor Completely: 1000p^3 - 1 help please
10. ### Greatest Common factors

I don't know these answers. Can you help me?

More Similar Questions