Answer: b. helium nucleus
Helium nucleus is the particle that is being emitted in an alpha radiation. This helium nucleus then transforms and becomes decays that are also known as alpha decays. The alpha particle maybe similar to helium nucleus however, it does not have electrons surrounding it.
It looks as though you missed a number, but you would factor out an x or a y to get your answer and subtract the whole thing
I'm pretty sure the answer is A because you're multiplying each number by 105 and A is the only answer with 105
The answer is
none of A, B, C and D is solution of <span>-6x2 + 20x - 17 > y</span>