Math, asked by mahi6980, 3 months ago

add the following:-



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Answers

Answered by lk4507099
0

Answer:

your answer in the above picture thanks

Attachments:
Answered by BrainlyPhantom
5

Answers:

(1)

H         T            O

x     -    3y    -    2z

5x   +   7y    -     z

-7x   -    2y   +    4z

________________

First we can add the terms in ones place:

= -2z + (-z) + 4z

= -3z + 4x

= z

Now we can add the terms in the tens place:

= -3y + 7y - 2y

= -5y + 7y

= 2y

Last, we can add hundreds place:

= x + 5x - 7x

= 6x - 7x

= -x

So the answer is:

-x + 2y + z

(2)

H         T        O

m²   -   4m  +   5

-2m² + 6m -    6

-m²    - 2m -     7

_________________

First we can add the terms in ones place:

= 5 - 6 - 7

= 5 - 13

= -8

Now we can add the terms in the tens place:

= -4m + 6m - 2m

= -6m + 6 m

= 0

Last, we can add hundreds place:

= m² - 2m² - m²

= -2m²

So the answer is:

= -2m² + 0 - 8

-2m² - 8

(3)

H         T         O

2x²  -   3xy  +  y²

-7x² -  5xy   -  2y²

4x²  +  xy    - 6y²

_______________

First we can add the terms in ones place:

= y² - 2y² - 6y²

= y² - 8y²

= -7y²

Now we can add the terms in the tens place:

= -3xy - 5xy + xy

= -8xy +xy

= -7xy

Last, we can add hundreds place:

= 2x² - 7x² + 4x²

= 6x² - 7x²

= -x²

So the answer is:

- x² - 7xy - 7y²

(4)

H          T          O

4xy  -   5yz   -   7zx

-5xy  + 2yz   +    zx

-2xy  -  3yz   +    3zx

_______________

First we can add the terms in ones place:

= -7zx + zx + 3zx

= -7zx + 4zx

= -3zx

Now we can add the terms in the tens place:

= -5yz + 2yz - 3yz

= -8yz + 2yz

= -6yz

Last, we can add hundreds place:

= 4xy - 5xy - 2xy

= 4xy - 7xy

= -3xy

So the answer is:

-3xy - 6yz - 3zx

★ Final Answers:

1) -x + 2y + z

2) -2m² - 8

3) -7y² - 7xy - x²

4) -3xy - 6yz - 3zx

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