13. (a-b)^2=a^2-2ab+b^2
B is the answer
14. B is the answer
( x+9)(x-3)= x^2+6x-27
15. B is the answer
(x+6)(x-5)=x^2+x-30
16. D is the answer
(x-6y)(x-4y)=x^2-10xy+24y^2
17. C is the answer
(2x+5)(3x-4)=6x^2+7x-20
18. B is the answer
(5x+7)(x-2)=5x^2-3x-14
Answer: The formula is x6
Step-by-step explanation:
Answer:

Step-by-step explanation:





Answer:
2 ounces of yellow, six of blue.
Step-by-step explanation:
If you teacher wants you to simplify put: yellow: 1, blue: 3
If not, put: yellow: 2, blue: 6