Question

2x(x-z+xy) and x(-x-z+xy)​

Answer 1

y+1

23−y

)(

y+1

27−y

)+

y+1

23−y

+

y+1

27−z

=41

⇒

(y+1)

2

621+y

2

−50y

+

y+1

50−2y

=41

⇒

(y+1)

2

621+y

2

−50y+(50−2y)(y+1)

=41

⇒621+y

2

−50y+50y−50−2y

2

−2y=41y

2

+41+82y

⇒42y

2

+84y−630=0

⇒y

2

+2y−15=0

⇒y

2

−3y+5y−15=0

⇒y(y−3)+5(y−3)=0

⇒(y+5)(y−3)=0

⇒y=−5,3