What is the verbal expression for all of these?

3x4 b. 5x2+16 c. 16u2-3 d. 12a+6b7

1. 3x^4

2. =5x^2+16

3. 16u^2−3

4. =6b^7+12a

i need points

step-by-step explanation:

sorry bubs

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.