= 9( k + 1) (8 + 1)
= 8. 9( k + 1) + 9( k + 1)
can anyone explain me 2 step how it came...please it is of example no 1.
we can write 9k+1 as ; - 9k .9
so, by multiplying with (8+1)
we get , 8.9k+1 + 9k+1 .
= 9( k + 1) (8 + 1)
= 8. 9( k + 1) + 9( k + 1)
can anyone explain me 2 step how it came...please it is of example no 1.
we can write 9k+1 as ; - 9k .9
so, by multiplying with (8+1)
we get , 8.9k+1 + 9k+1 .