please answer me fast
Answers
Answer:
3.
Step-by-step explanation:
3.(13x+7y)-(2x+6a)
first we have to remove the brackets
that is 13x+7y-2x-6a
then we have to seperate the like terms
that is 13x-2x+7y-6a
=11x+7y-6a
It is the answer.
4.(2xy to the power2 -3x+4y)+(-4xysquare+6x-3y)
=2xysquare-3x+4y-4xysquare+6x-3y
=2xysquare-4xysquare-3x+6x+4y-3y
=-2xysquare+3x+y
it is the answer
5.(2a-3b-c)-(-4a+5b-3c)+(3a+b-5c)
=2a-3b-c+4a-5b+3c+3a+b-5c
=2a+4a+3a-3b-5b+b-c+3c-5c
=9a-7b-2c
it is the answer
6.(3asquare-2bsquare)-(2asquare+3bsquare)
=3asquare-2bsquare-2asquare+3bsquare
=3adquare-2asquare-2bsquare+3bsquare
=+asquare+bsquare
it is the answer.
7.(3x-4xy+7ysquare-6)-(2ysquare+3xy-5)
=3x-4xy+7ysquare-6-2ysquare-3xy+5
=3x-4xy-3xy+7ysquare-3ysquare-6+5
=3x-xy+4ysquare-1
it is the answer
8.perimeter of the the triangle =(4xsquare+2x-5) +(xsquare -15x+5)+(xsquare -8x+2)
=4xsquare+2x-5+xsquare-15x+5+xsquare-8x+2
=4xsquare+xsquare+xsquare+2x-15x-8x-5+5+2
=6xsquare-21x+2
it is the answer