Question

1,5х(х – 6у) – Зу(у – 3х), если x = -0,4; y = -0,2

Answer 1

Ответ:вот

Объяснение:

Answer 2

To evaluate the expression $1.5 \times (x - 6y) - 3z(y - 3x)$ with the given values of $x = -0.4$ and $y = -0.2$, we need to substitute these values into the expression and perform the calculations step by step.

Step 1: Substitute the values of $x$ and $y$ into the expression. $1.5 \times (-0.4 - 6 \times (-0.2)) - 3 \times (-0.2 - 3 \times (-0.4))$

Step 2: Simplify the expression inside the parentheses first. $1.5 \times (-0.4 + 1.2) - 3 \times (-0.2 + 1.2)$

Step 3: Continue simplification inside the parentheses. $1.5 \times 0.8 - 3 \times 1$

Step 4: Perform the multiplication. $1.2 - 3$

Step 5: Perform the subtraction. $-1.8$

So, when $x = -0.4$ and $y = -0.2$, the expression evaluates to $-1.8$.