Question

Find the perimeter of rectangle whose two adjacent sides
are 5x2 + 2xy - 3; 2x2 - 6xy + 1
a] 7x2 - 4xy – 2 b] 7x2 + 4xy + 2
c) 14x2 - 8 xy + 4 d] 14x2 – 8xy - 4​

Answer 1

Answer:

d

Step-by-step explanation:

perimeter of rectangle= 2(l+b)

so, 2(5x2+2xy-3+2x2-6xy+1)

2( 7x2-4xy-2)

14x2-8xy- 4

Answer 2

Answers: 1) 13 + 2xy, 3 -6xy, A) - 12 - 4xy, B) - 16 + 4xy, C) - 32 - 8xy, D) - 24 - 8xy

Step-by-step explanation: 5 x 2 + 2xy - 3

10 + 2xy - 3  

10 + 3  Combine Like Terms

13 + 2xy  

2 x 2 - 6xy + 1

4  - 6xy + 1

4 - 1 Combine Like Terms

3 - 6xy

A - 7 x 2 - 4xy - 2

14 - 4xy - 2

14 - 2 Combine Like Terms

12 - 4xy

B - 7 x 2 + 4xy + 2

14 + 4xy + 2

14 + 2 Combine Like Terms

16 + 4xy

C - 14 x 2 - 8xy + 4

28 - 8xy + 4

28 + 4 Combine Like Terms

32 - 8xy

D - 14 x 2 - 8xy - 4

28 - 8xy - 4

28 - 4   Combine Like Terms

24 - 8xy