Respuesta :

Answer:

21 x 2 − 10x − 75

Step-by-step explanation:

Cant solve for x can only simplify^

Answer:

-15x+21x(squared)-75

Step-by-step explanation:

(3x+5) (7x-15)

3x(7x-15) 5(7x-15)

21x (squared) -45x+35x-75

-15x+21x(squared)-75