## anonymous 5 years ago factor using the difference of 2 squares 1.x^2-36 2.x^2+4 3.4x^2-25 4.y^2-1

1. anonymous

1.(x-6)(x+6)

2. anonymous

$x^2+4x+4-4x=(x+2)^2-(2\sqrt{x})^2=(x+2-2\sqrt{x})(x+2+2\sqrt{x})$

3. anonymous

3.(2x-5)(2x+5)

4. anonymous

4.(y_1)(y+1)

5. anonymous

ok so you guys are confusing me uzma its the same thing as before

6. anonymous

which 1?

7. anonymous

its gunna start out as factoring out the GCF and i have to do the difference of 2 squares method, or trial and error and i dont know how to do it.