Question

Find the value of xy +3y-9 if X=1 &y=2
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Answer 1

since, x=1 and y=2

Q. xy + 3y - 9

=> 1×2 + 3 × 2 - 9

=> 2 + 6 -9

=> 8 - 9

=> -1

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Answer 2

Answer:

If x=1 and y = 2

then putting the value in equation it will be

(1)(2)+3(2)-9

i.e. 2+6-9 = 8-9 = -1

Therefore the value of xy +3y-9 if X=1 &y=2 is -1