Which expressions are polynomials? Select each correct answer. 3y2(x14) 9x2(y5) 4x2(y5) 8x2(3y)

Answer:option B and C are correct.Step-by-step explanation:The correct question is:Which expressions are polynomials? Select EACH correct answer. A: 3y2(x^1/4) B: 9x2(y^5) C:  4x2(y^5)D: 8x2(3^y)Solution:According to this question option B and C are correct.A polynomial is an expression consisting of variables and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables. a variable's exponents can only be 0,1,2,3,... etc. A polynomial can not have any exponent as a variable or a fraction