Question

What should be taken away from 3x2 – 4y2 +5xy +20 to obtain -x
2 – y
2 +6xy+20?

Answer 1

Answer:

plz mark me brailist

Step-by-step explanation:

Let q should be subtracted.

Then according to question,

3x

2

−4y

2

+5xy+20−q=−x

2

−y

2

+6xy+20

⇒q=3x

2

−4y

2

+5xy+20−(−x

2

−y

2

+6xy+20)

⇒q=3x

2

−4y

2

+5xy+20+x

2

+y

2

−6xy−20

⇒q=3x

2

+x

2

−4y

2

+y

2

+5xy−6xy+20−20

⇒q=4x

2

−3y

2

−xy+0

Hence, 4x

2

−3y

2

−xy should be subtracted.

Answer 2

Answer:

2−y(2)+6xy+20

=2+−2y+6xy+20

Combine Like Terms:

=2+−2y+6xy+20

=(6xy)+(−2y)+(2+20)

=6xy+−2y+22