Question

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

Answer 1

Answer:

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Step-by-step explanation:

x=¼

y=-½

2xy(x-4)+5y

2×¼×(-½)(¼-4)+5×¼

-¼(-¾)+5/4

3+5/4

17/5

Answer 2

Given :- x = 1/4

y = -1/2

Simplification :-

=> 2×1/4×(-1/2)(1/4 - 4) + 5×(-1/2)

=> 1/2×(-1/2)[(1-16)/4] +(-5/2)

=> 1/2×(-1+16)/8 + (-5/2)

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

=> (15 - 40)/16

=> (-25)/16

The Answer is (-25)/16....