Simpify 2xy (x - 4) + 5y and find its value for, x = 1/4 and y = -1/2
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2×1/4×-1/2(1/4-4)+5×-1/2
-2/8(1-16/4)+(-5/2)
-1/4×-15/4-5/2
15/16-5/2
(15-40)/16
-25/16
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