Question

3x²y*(-5x*y³) при x=1/3, y=1

Answer 1

Ответ:

-5/9

р

ешение снизу

Answer 2

To evaluate the expression 3x²y*(-5xy³) when x = 1/3 and y = 1, we substitute the given values into the expression:

3(1/3)²(1)*(-5(1/3)(1)³)

First, let's simplify the terms inside the parentheses:

(1/3)² = 1/9 (1)³ = 1

Substituting these values into the expression:

3(1/9)(1)*(-5(1/3)(1))

Now, let's simplify the remaining multiplication:

3/9 * -5/3

To multiply fractions, we multiply the numerators together and the denominators together:

(3 * -5) / (9 * 3) = -15/27

The fraction -15/27 can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 3:

(-15 ÷ 3) / (27 ÷ 3) = -5/9

Therefore, when x = 1/3 and y = 1, the expression 3x²y*(-5xy³) evaluates to -5/9.