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Subtract [tex]3x(x - 2y)[/tex] from [tex]6(x^2 - xy)[/tex] and express your answer as a monomial.

Sagot :

To solve the problem of subtracting [tex]\( 3x(x - 2y) \)[/tex] from [tex]\( 6(x^2 - xy) \)[/tex] and expressing the answer as a monomial, follow these steps:

1. Expand the expressions:

First, let's expand both expressions:

[tex]\[ 6(x^2 - xy) = 6x^2 - 6xy \][/tex]

[tex]\[ 3x(x - 2y) = 3x^2 - 6xy \][/tex]

2. Set up the subtraction:

We need to subtract [tex]\( 3x(x - 2y) \)[/tex] from [tex]\( 6(x^2 - xy) \)[/tex]. So we set up the expression as:

[tex]\[ (6x^2 - 6xy) - (3x^2 - 6xy) \][/tex]

3. Combine like terms:

When subtracting, distribute the negative sign across the terms inside the parentheses:

[tex]\[ 6x^2 - 6xy - 3x^2 + 6xy \][/tex]

Next, combine the like terms:

[tex]\[ (6x^2 - 3x^2) + (-6xy + 6xy) \][/tex]

Simplify the expressions:

[tex]\[ 3x^2 + 0 \][/tex]

4. Express the answer as a monomial:

The result simplifies directly to a single term:

[tex]\[ 3x^2 \][/tex]

Therefore, the answer, expressed as a monomial, is [tex]\( \boxed{3x^2} \)[/tex].