Question

Q - 1 Do as directed.

1. Add ab -bc into bc - ca (2)

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

Answer 1

Answer:

1. ab-ca

2. 3x+4xy-1

Step-by-step explanation:

ab-bc-bc-ca

ab-ca

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

    3x+4xy-1

Answer 2

SOLUTION

TO DETERMINE

1. Add ab -bc into bc - ca

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

EVALUATION

1. The required result

$\sf{ =(ab - bc) + (bc - ca)}$

$\sf{ =(ab - bc + bc - ca)}$

$\sf{ =(ab - ca)}$

2. The required result

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

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

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

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