Respuesta :

15x^2 + 13x - 20

= 15x^2  + 25x - 12x - 20

= 5x(3x + 5) - 4(3x + 5)

= (5x - 4)(3x + 5)

Answer:

binomial (5x -4)(3x +5) factor of trinomial.

Step-by-step explanation:

Given  : 15x² + 13x - 20.

To find : Which of the binomials below is a factor of this trinomial.

Solution : We have given

Trinomial : 15x² + 13x - 20.

On factoring

15x² + 25x - 12x - 20.

5x( 3x +5) - 4 (3x +5)

On grouping

(5x -4)(3x +5)

These two binomial (5x -4)(3x +5) factor of trinomial.

Therefore,  binomial (5x -4)(3x +5) factor of trinomial.