Question

subtract the following
x2-x+1 from -8x2- x2 -3x + 2​

Answer 1

Answer:

$\huge\underline\mathfrak\green{♠Answer♠}$

⇉⇉ - 8x² - x² - 3x + 2

⇉⇉ ____+ x²- X + 1.

↠↠ 8x² - 2x²+ 2x -1.

♣↬❝hence your answer is ❨- 8x²-2x²-2x+1.❩❞

*how to subtract algebraic expressions*:-

==> rules of subtraction

when we are subtract a sum in Algeria we have to change the sign in subtraction

• we have x²-x+1 from -8x²- x² - 3x + 2.
• first:- separate all like terms.
• second:- subtract what you have separate.
• while subtracting you have to change the sign from which you are subtracting. put the place of + change to - and - change to +. and in Answer put that sign what you have changed.

so, in question we subtract x²-x+1 from -8x²-x²-3x + 2.

put like this :-

-8x²-x²-3x+2

+x²-x +1↠↠↠change sign

⇉ 8x²-2x²+2x-1.

so this is your answer :- (-8x² - 2x²-2x+1)

more examples:-

subtract: 3xy+5yz-7zx from 5xy- 2yz-2zx+10 xyz.

Ans:-

5xy - 2yz-2zx+10xyz

3xy +5yz- 7zx.

= 2xy- 7yz + 5zx + 10xyz

hence, Answer is 2xy - 7yz+ 5zx + 10xyz.

✰✰ in subtraction we have to change sign

✰✰ in addition we have to not change sign.

Answer 2

Answer:

⇉⇉ - 8x² - x² - 3x + 2

⇉⇉ ____+ x²- X + 1.

↠↠ 8x² - 2x²+ 2x -1.

♣↬❝hence your answer is ❨- 8x²-2x²-2x+1.❩❞

*how to subtract algebraic expressions*:-

==> rules of subtraction

when we are subtract a sum in Algeria we have to change the sign in subtraction

we have x²-x+1 from -8x²- x² - 3x + 2.

first:- separate all like terms.

second:- subtract what you have separate.

while subtracting you have to change the sign from which you are subtracting. put the place of + change to - and - change to +. and in Answer put that sign what you have changed.

so, in question we subtract x²-x+1 from -8x²-x²-3x + 2.

put like this :-

-8x²-x²-3x+2

+x²-x +1↠↠↠change sign

⇉ 8x²-2x²+2x-1.

so this is your answer :- (-8x² - 2x²-2x+1)

more examples:-

subtract: 3xy+5yz-7zx from 5xy- 2yz-2zx+10 xyz.

Ans:-

5xy - 2yz-2zx+10xyz

3xy +5yz- 7zx.

= 2xy- 7yz + 5zx + 10xyz

hence, Answer is 2xy - 7yz+ 5zx + 10xyz.

✰✰ in subtraction we have to change sign

✰✰ in addition we have to not change sign.