Select all the correct answers. Which expression can be factored using the difference of squares identity? 6x^2 - 81
49x - x^4
X^4 - 400
32y^2 - 8z^2
4a^2 - 64b^5

Find the value of x that will make l ll m

Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !

How many 2/5s are in 1 and 1/2 plz someone me right now