Which products result in a perfect square trinomial? check all that apply. (–x + 9)(–x – 9) (xy + x)(xy + x) (2x – 3)(–3 + 2x) (16 – x2)(x2 – 16) (4y2 + 25)(25 + 4y2)

Perfect Square Trinomials are quadratics that is the result of squaring binomials.  For instance, for the square of the sum:

We know that this equals:

That is equivalent to the Perfect Square Trinomial:

By knowing this, we can say that the correct answers are:

FIRST.

SECOND.

THIRD.

The correct option are 2,3 and 4.

Step-by-step explanation:

The form of perfect square trinomial are

Simplify the all given expressions.

In option 1,

It is not a perfect square trinomial, therefore option 1 is incorrect.

In option 2,

It is a perfect square trinomial, therefore option 2 is correct.

In option 3,

It is a perfect square trinomial, therefore option 3 is correct.

In option 4,

It is a perfect square trinomial, therefore option 4 is correct.

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step-by-step explanation:

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step-by-step explanation: