Question

1)(0,2x+0,2y-z) (x-y) 2)(0,3x-0,3y+z) (x+y)

Answer 1

Ответ:

0,2x²-0,2y²-z

0,3x²-0,3y²+z

Answer 2

It seems like you want to multiply two expressions. Let's go ahead and expand these expressions:

1. (0.2x + 0.2y - z) * (x - y)

To multiply these expressions, we can use the distributive property (FOIL method):

= (0.2x * x) + (0.2x * (-y)) + (-z * x) + (-z * (-y))

Now, let's simplify each term:

= 0.2x^2 - 0.2xy - zx + zy

So, the result of the first expression is: 0.2x^2 - 0.2xy - zx + zy

2. (0.3x - 0.3y + z) * (x + y)

Again, we'll use the distributive property (FOIL method) to multiply these expressions:

= (0.3x * x) + (0.3x * y) + (z * x) + (0.3y * x) + (0.3y * y) + (z * y)

Now, simplify each term:

= 0.3x^2 + 0.3xy + zx + 0.3xy + 0.3y^2 + zy

Combine like terms:

= 0.3x^2 + 0.6xy + 0.3y^2 + zx + zy

So, the result of the second expression is: 0.3x^2 + 0.6xy + 0.3y^2 + zx + zy