Factorise:
(the following that is in photo)
Attachments:
Answers
Answered by
0
i dont know jjjjjjjjjj
Answered by
0
Hi ,
i ) 25x² - 10x + 1
= ( 5x )² - 2 × 5x × 1 + 1²
= ( 5x - 1 )²
= ( 5x - 1 )(5x - 1 )
ii ) 169a² -52b + 4b²
= ( 13a )² - 2 × 13a × 2b + ( 2b )²
= ( 13a - 2b )²
= ( 13a - 2b )( 13a - 2b )
iii ) 10z² - 83z - 17
= 10z² - 85z + 2z - 17
= 5z ( 2z - 17 ) + 1( 2z - 17 )
= ( 2z - 17 )(5z + 1 )
iv ) x² - 2√5x + 5
= x² - 2 × x × √5 + ( √5 )²
= ( x - √5 )²
= ( x - √5 )( x - √5 )
I hope this helps you.
: )
i ) 25x² - 10x + 1
= ( 5x )² - 2 × 5x × 1 + 1²
= ( 5x - 1 )²
= ( 5x - 1 )(5x - 1 )
ii ) 169a² -52b + 4b²
= ( 13a )² - 2 × 13a × 2b + ( 2b )²
= ( 13a - 2b )²
= ( 13a - 2b )( 13a - 2b )
iii ) 10z² - 83z - 17
= 10z² - 85z + 2z - 17
= 5z ( 2z - 17 ) + 1( 2z - 17 )
= ( 2z - 17 )(5z + 1 )
iv ) x² - 2√5x + 5
= x² - 2 × x × √5 + ( √5 )²
= ( x - √5 )²
= ( x - √5 )( x - √5 )
I hope this helps you.
: )
Similar questions