Which of the following expressions are equivalent to (x+4y)^2 check all that apply: A. x^2+8xy+16y^2 B. x^2+2xy+2y(x+2y) C. x^2+16y^2 D. x^2+4xy+4y(x+4y) Question 2. If the expression ax(2x+y-5) simplifies to 6x^2+3xy-15x, what is the value of a? Type only the numeric value into the box.

Given:

The expression is .

The expression simplifies to .

To find:

The equivalent expression.

The value of a.

Solution:

The expression is

Using , we get

Therefore, the correct option is A.

The expression simplifies to . So,

On comparing the coefficient of ,, we get

Divide both sides by 2.

Therefore, the value of a is 3.

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step-by-step explanation:

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.