Question

-4a2b3+7ab3-a•b3•a+ba2b•8ab3 если a=0,5 , b=2

Answer 1

Если я не ошибаюсь :-5088

Answer 2

To evaluate the given expression when a=0.5 and b=2, simply replace the variables a and b with their corresponding values in the expression and perform the arithmetic operations step by step. Let's do it:

Given expression: -4a^2b^3 + 7ab^3 - ab^3a + ba^2b • 8ab^3

Step 1: Substitute the values of a and b -4(0.5)^2(2)^3 + 7(0.5)(2)^3 - (0.5)(2)^3(0.5) + (2)(0.5)^2(2) • 8(0.5)(2)^3

Step 2: Evaluate the powers and perform the multiplications -4(0.25)(8) + 7(1)(8) - (0.5)(8)(0.5) + (2)(0.25)(2) • 8(1)(8)

Step 3: Perform the multiplications -8 + 56 - 2 + 8 • 16

Step 4: Evaluate the final expression -8 + 56 - 2 + 128

Step 5: Perform the remaining additions = 174

Therefore, when a=0.5 and b=2, the value of the expression is 174.