Please send the ans of 3rd whole question and 5-e
Attachments:
Shellhazer1:
Please send 5-e only
Answers
Answered by
1
5.e. (x+7)(x-10)+16
=x²-10x+7x-70+16
= x² -3x -54
= x²-( 9-6) x -54
= x² - 9x + 6x -54
= x( x- 9) + 6 (x-9)
= ( x-9 ) ( x+6)
3.b. ( l +m)² - ( l - m)²
= [( l+m) + ( l-m)] [( l+m) - (l-m)]
=[ l +m+l-m] [ l+m-l+m]
= (l+l) (m+m)
= 2l ×2m
=4lm
=x²-10x+7x-70+16
= x² -3x -54
= x²-( 9-6) x -54
= x² - 9x + 6x -54
= x( x- 9) + 6 (x-9)
= ( x-9 ) ( x+6)
3.b. ( l +m)² - ( l - m)²
= [( l+m) + ( l-m)] [( l+m) - (l-m)]
=[ l +m+l-m] [ l+m-l+m]
= (l+l) (m+m)
= 2l ×2m
=4lm
Similar questions