Simplify. (x−5)(x^2−2x−6)
also explain how you got your answer. -

=x3−7x2+4x+30

Step-by-step explanation:

(x−5)(x2−2x−6)

=(x+−5)(x2+−2x+−6)

=(x)(x2)+(x)(−2x)+(x)(−6)+(−5)(x2)+(−5)(−2x)+(−5)(−6)

=x3−2x2−6x−5x2+10x+30

=x3−7x2+4x+30

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.