What is the factored form of a2 – 121?

(a – 121)(a – 1)

(a – 11)(a 11)

(a 11)(a 11)

(a – 121)(a 1)

The factored form is given by (a+11)(a-11)

Step-by-step explanation:

We have been given the expression

We can write

Thus, we have

Now, using the formula for difference of squares, which is given by

On comparing the above expression, with the given formula, we get a=a, b=11. Thus, we have

Therefore, the factored form is given by (a+11)(a-11)

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.