Which expressions are prime polynomials? +4 + 3y2r – 1
x2 - 9x +3
13 – 512y3
9y – 4y2 + 12y3
12 – 3r – 10

the correct answer is option ( B ) x2 - 9x + 3 is a Prime polynomial

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.