Mutiply the polynomial (x - 6)(x^2 + 2x - 4)

the answer is x^3+4x^2-16x+24

x^3 − 4x^2 − 16x + 24

Step-by-step explanation:

(x − 6) (x^2 + 2x − 4)

= (x + −6) (x^2 + 2x + −4)

=(x) (x^2) + (x)( 2x) + (x) (−4) + (−6)  (x^2) + (−6) (2x) + (−6) (−4)

=x^3 + 2x^2 − 4x − 6x^2 − 12x + 24

=x^3 − 4x^2 − 16x + 24

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,