Question

Add 9x+3y-12xy and 6x-3y+4xy and find the value of the result if x = 2, y= 1
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Answer 1

Answer:

14

Step-by-step explanation:

9x + 3y - 12xy + 6x - 3y + 4xy

= 9x + 6x + 3y - 3y - 12xy + 4xy

= 15x + 0 - 8xy = 15x - 8xy

x = 2, y = 1

= (15 × 2) - (8 × 2 × 1)

= 30 - 16 = 14

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