Question

Which is equivalent to the following expression? (2x^2+4xy-y^2)+(x^2+3xy-y^2)

a. 3x^2-7xy-2y^2
b. 3x^2+7xy+2y^2
c. 3x^2+7xy-2y^2
d. 3x^2-7xy+2y^2

Answer 1

annswer:

−

80

Step-by-step explanation:

2

(

2

)

2

+

[

3

(

2

)

(

−

4

)

]

−

4

(

−

4

)

2

2

(

4

)

+

[

−

24

]

−

4

(

16

)

8

−

24

−

64

=

8

−

88

=

−

80

Related questions

Answer 2

My options are different,

A. 3x2-7xy-2y2

B. 3x4+7xy-2y4

C. 3x2+7xy-2y2

D. 2x2-7xy+2y2