Question

Simplify : 2xy (x – 4) + 5y and find its value for x=1/4, y=-1/2
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Answer 1

Answer:

Step-by-step explanation:Step-by-step explanation:

given,

2 × (1/4 ) × ( -1/2 ) + ( 1/4 - 4 ) + 5 × ( -1/2 )

by using calculator

= -1/4 × ( -15/4 ) + ( -5/2 )

= ( 15/16 ) + ( -5/2 )

= ( -25/16 )

Answer 2

$\huge \underline {Simplify }$

2xy(x-4)+5y_

(2x²y-8xy)+5y

[(2×(1/4²×-1/2)-8×1/4×-1/2)]+5×-1/2

[(2×1/16×-1/2)-(-1)] (-5/2)

[-1/16+1/1]-5/2

[-1+16/16]-5/2

15/16-5/3

15-40/16

-25/16 _Answer ♡♡.

Hope it helps you dear .♡♡.