Question

8. d(d – 5)+7(5 – d)​

Answer 1

Answer:

d ( d - 5 ) + 7 ( 5 - d)

d² - 5d + 35 - 7d

d² - 12d + 35

d² - 7d - 5d + 35

d ( d - 7 ) - 5 ( d - 7 )

( d - 5 ) ( d - 7 )

Answer 2

Step-by-step explanation:

d(d - 5)+7(5 -d)

d^2 - 5d + 35 - 7d

d^2 - 12d + 35

by splitting the middle term

d^2 - 7d -5d + 35

d( d - 7) -5(d - 7)

(d - 5)(d - 7)

d - 5 = 0. or. d - 7 = 0

d = 5. d = 7