Question

if 2x+3x eqal to 14,2x-3y equal to 2,find the value of xy​

Answer 1

Answer:

xy = 8

Step-by-step explanation:

2x + 3y = 14 ..............(1)

2x - 3y = 2 .............(2)

Adding (1) and (2) we get

4x = 16

x = 4.

Now, putting x = 4 in any equation ( (1) or (2) )

We get y = 2.

Now xy = 4 x 2 = 8.

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Answer 2

Answer:8

Step-by-step explanation:

2x+3y=14

(2x+3y)^2= 14^2

4x²+ 12xy+ 9y²= 196

(2x- 3y)²= 2²

4x²-12xy+9y² = 4

4x²+ 12xy + 9y²-( 4x²-12xy+9y²) = 196-4= 192

24xy =192

xy = 8