Question

5х2у3+4(х-у) при х=-1/2,у=-1

Answer 1

5*(-0,5)*2*(-1)+4*(-0,5+1)=7

1/2=2:1=0,5

Answer 2

To evaluate the expression 5x^2y^3 + 4(x - y) when x = -1/2 and y = -1, follow these steps:

Step 1: Replace x with -1/2 and y with -1 in the expression.

5 * (-1/2)^2 * (-1)^3 + 4 * (-1 - (-1))

Step 2: Simplify the expression within the parentheses first.

5 * (-1/4) * (-1) + 4 * (0)

Step 3: Perform the multiplication.

= 5/4 + 0

Step 4: Add the fractions.

= 5/4

The value of the expression when x = -1/2 and y = -1 is 5/4 or 1.25.