Question

The coefficient of x2 in product of (x-1) (x+5) (x-6)​

Answer 1

Answer:

- 2

Step-by-step explanation:

(x + a)(x + b)(x + c)

= x³ + (a + b + c)x² + (ab + bc +ca)x + abc

Co efficient of x² is (a + b + c)

(x - 1)(x + 5)(x - 6)

Co efficient of x² is ( - 1 + 5 - 6) = - 2