Respuesta :
Answer:
(3x - 7)(x - 1).
Step-by-step explanation:
3x^2 - 10x + 7
We need 2 numbers whose product is 21 and sum = -10.
These are -3 and - 7 so we write:
3x^2 - 10x + 7
= 3x^2 - 3x - 7x + 7 Now we factor by grouping:
= 3x(x - 1) - 7(x - 1)
= (3x - 7)(x - 1).
