Question

-3x(2x+y)-4y(3x-2y) при x= -0,1 y=0,2

Answer 1

Ответ:

Объяснение:

=-6х^2-3ху-12ху+8у^2=

-6х^2-15ху+8у^2

-6×(-0.1)^2-3×(-0.1)×0.2+8×0.1^2=

-0.06+0.06+0.08=0.08

Answer 2

To evaluate the expression -3x(2x+y)-4y(3x-2y) when x = -0.1 and y = 0.2, we substitute the given values into the expression and simplify:

-3(-0.1)(2(-0.1) + 0.2) - 4(0.2)(3(-0.1) - 2(0.2))

Let's break it down step by step:

-3(-0.1)(2(-0.1) + 0.2) can be simplified as follows: -3(-0.1)(-0.2 + 0.2) = -3(-0.1)(0) = 0

Next, we evaluate the remaining part of the expression: -4(0.2)(3(-0.1) - 2(0.2))

Simplifying further: -4(0.2)(-0.3 - 0.4) = -4(0.2)(-0.7) = -0.56

Combining the two parts, we have: 0 - 0.56 = -0.56

Therefore, when x = -0.1 and y = 0.2, the value of the expression -3x(2x+y)-4y(3x-2y) is -0.56.