Question

2xy (x-4) + 5y and find its value for x=2,y= -1 x=1/4, y = -1/2​

Answer 1

Answer:

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Step-by-step explanation:

2×2×-1(2-4)+5×-1

3(-2)-5

-6-5

-11

Answer 2

Step-by-step explanation:

x= 2 y= -1

2xy(x-4)+5y

=2×2×(-1)(2-4)+5×(-1)

= -4×(-2)+(-5)

=8-5

=3

x=1/4 y=-1/2

2xy(x-4)+5y

=2×1/4×(-1/2)(1/4-4)+5×(-1/2)

= -1/4×(-15/4)+(-5/2)

=15/16+(-5/2)

=(15-40)/16

= -25/16