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Softa [21]
2 years ago
14

Simplify the expression to a polynomial in standard form:

Mathematics
1 answer:
lukranit [14]2 years ago
7 0

Answer:

-x^3+7x^2-6x-18

Step-by-step explanation:

Use distributive property: (-x+3)(x^2-4x-6)

What is -x * x^2? Answer: -x^3

What is 3 * x^2? Answer: +3x^2

What is -x * -4x? Answer: +4x^2

What is 3* -4x? Answer: -12x

What is -x * -6? Answer: +6x

What is 3 * -6? Answer: -18

-x^3+3x^2+4x^2-12x+6x-18

Combine like terms, and your answer would be....

-x^3+7x^2-6x-18

Hope this helps :)

Have a great day!

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9514 1404 393

Answer:

  C

Step-by-step explanation:

The step shown indicates that y was eliminated from the equations. For choices A, B, D, this is done by adding the equations together (the y-coefficients are opposites). The result of doing that gives x-terms of 4x, 0x, and 0x, respectively. These x-terms do not match the one given: 2x.

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