PLEASE HELP 50 POINTS Tyrone factored the polynomial completely. What is the value of B?

12x4+30x3+4x2+10x

Ax(Bx2+1)(2x+5)

A: 2
B: 3
C: 5
D: 6

With this question! what is process of elimination? ? p. s. my brothers acc got banned so add his new one @ yamauchiyamyam17

William invested $5000 in an account that earns 3.8% interest, compounded annually. the formula for compound interest is a(t) = p(1 + i)t. how much did william have in the account after 6 years? (apex)

Using elimination, what is -4x+2y=-12 4x+8y=-24