Factorise the following.​

m^2 -121

m^2 - 11^2

( m - 11 ) ( m + 11 )

6x^2 - 54

6 ( x^2 - 9 )

6 ( x - 3 ) (x + 3 )

m^2-121

m^2-11^2

(m-11)(m+11)

Step-by-step explanation:

6×^2-54

6(×2^-9)

6(×-3)(×+3)

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.