Question

Please explain question no. 29 from the above pic

Answer 1

Answer :

factorize x² - x - 42

= x² - ( 7 - 6 ) x - 42

= x² - 7x + 6x - 42

= x ( x - 7 ) + 6 ( x - 7 )

= ( x - 7 ) ( x + 6 )

Hence the value of k is -7 .

Hope it helps !!!!

Answer 2

Step-by-step explanation:

hope the above answer will help you