Question

What is the value of minus 6 x cubed minus y squared minus 3 x y if if x = -2 and y = 4

Answer 1

Well, "minus 6 x cubed minus y squared minus 3 x y" translates to:

`-6x^(2) -y^(2) -3xy`

Then, if we insert the values for x and y, we get:

`-6(-2)^(2) -(4)^(2) -3(-2)(4)`

When we distribute and multiply:

`144-16-24`

And once we combine like terms:

104 is the answer

Answer 2

The given statement can be written in expression form as

`-6x^3-y^2-3xy`

As the value of
`x=-2` and
`y=4` are given .

To find the value of expression at the given values of
`x` and
`y` , we have to insert the values into the expression

`-6(-2)^3-(4)^2-3(-2)(4)`

Now solving by cubing and squaring the numbers

`-6(-8)-16-3(-8)`

As negative negative is positive and positive negative is negative

`48-16+24`

Adding like terms and subtracting we get

`72-16=56`

56 is the Answer

Hope this will help