Question

factorise:-
i) x power 2 - 11 x -26 ,
ii) x power 2 + 20x + 36 ,
iii) x power 2 + 4x- 77 ,
iv) 9xpower2- 6x +1
please answer correctly. ​

Answer 1

Answer:

i) x^2 - 11x - 26

x^2 - 13x + 2x - 26

x ( x - 13 ) + 2 ( x - 13 )

( x - 13 ) ( x + 2 )

ii) x^2 + 20x + 36

x^2 + 18x + 2x + 36

x ( x + 18 ) + 2 ( x + 18 )

( x + 18 ) ( x + 2 )

iii) x^2 + 4x - 77

x^2 + 11x - 7x - 77

x ( x + 11 ) - 7 ( x + 11 )

( x + 11 ) ( x - 7 )

iv ) 9x^2 - 6x + 1

9x^2 -3x -3x + 1

3x ( 3x - 1 ) - 1 ( 3x - 1 )

( 3x - 1 ) ( 3x - 1 )

hope it helps you