Question

Do as Directed
2. Subtract (3x--- 2x + 5xy - 7) from (8 - 9xy + 3x2 – 5x)​

Answer 1

EVALUATION

TO PERFORM

TO subtract

$\sf{(3 {x}^{2} - 2x + 5xy - 7 )\: \: from \: \: (8 - 9xy + 3 {x}^{2} - 5x) }$

EVALUATION

We have to subtract

$\sf{(3 {x}^{2} - 2x + 5xy - 7 )\: \: from \: \: (8 - 9xy + 3 {x}^{2} - 5x) }$

So the required result

$\sf{ = (8 - 9xy + 3 {x}^{2} - 5x) - (3 {x}^{2} - 2x + 5xy - 7 )}$

$\sf{ = 8 - 9xy + 3 {x}^{2} - 5x - 3 {x}^{2} + 2x - 5xy + 7 }$

$\sf{ = 15 - 14xy - 3x }$

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Answer 2

Given  : (3x² - 2x + 5xy - 7) and (8 - 9xy + 3x² – 5x)​

To Find : Subtract (3x² - 2x + 5xy - 7) from (8 - 9xy + 3x² – 5x)​

Solution:

Subtract (3x² - 2x + 5xy - 7) from (8 - 9xy + 3x2 – 5x)​

=   (8 - 9xy + 3x² – 5x)​ -  (3x² - 2x + 5xy - 7)

=  8 - 9xy + 3x² – 5x  -3x²+ 2x - 5xy + 7

=  8 + 7 -9xy - 5xy + 3x² -  3x² -5x + 2x

= 15 - 14xy - 3x

= -14xy - 3x + 15

Subtract (3x² - 2x + 5xy - 7) from (8 - 9xy + 3x2 – 5x)​

=  -14xy - 3x + 15

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