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