Question

Which expressions are perfect square trinomials? check all that apply. x2 16x 8 x2 14x 49 x2 – 5x 25 x2 – 24x 144 x2 9x – 81

Answer 1

Answer:

Options 2 and 4

Step-by-step explanation:

Answer 2

The perfect square trinomial will be $\rm x^2+14x+49$ ,  $x^2-24x+144$Expression 2 and 4 are correct.

What are trinomials?

A mathematical expression with three terms or three monomials is called a trinomial. Polynomials having only three terms are known as trinomials.

The second and fourth expression seems to be the perfect square let's check it.

Expression 2;

$x^2 + 14x+49 \\\\ x^2+7x+7x+49 \\\\ x(x+7)+7(x+7)\\\\ (x+7)(x+7) \\\\ (x+7)^2$

Expression 4;

$x^2-24 x +144 \\\\ x^2-12x-12x+144 \\\\ x(x-12)-12(x-12) \\\\ (x-12)^2$

Hence the perfect square trinomial will be $\rm x^2+14x+49$ ,  $x^2-24x+144$ .Expressions 2 and 4 are correct.

To learn more about the trinomials refer to the link;

https://brainly.in/question/8498839