3 years ago

Please help me! If you could explain that would be great but you don't have to

Mathematics

1 answer:

zalisa [80]3 years ago

6 0

Answer:

Addition property

Step-by-step explanation:

The plus sign in the question tells us it’s an addition property

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Simplify the following polynomial expression. (5x^4 - 9x^3 + 7x - 1) + (-8x^4 + 4x^2 - 3x + 2) - ( -4x^3 + 5x - 1)( 2x - 7)

Lady bird [3.3K]

Answer: $5x^{4}-37x^{3}-6x^{2} +41x-6$

Step-by-step explanation:

1. You must apply the Distributive property. You need to remember the product property of exponents: If you multiply powers with the same base, you must add the exponents. Them you have:

$=5x^{4}-9x^{3}+7x-1-8x^{4}+4x^{2}-3x+2-(8x^{4}+28x^{3}+10x^{2}-35x-2x+7)\\=5x^{4}-9x^{3}+7x-1-8x^{4}+4x^{2}-3x+2-8x^{4}-28x^{3}-10x^{2}+35x+2x-7$

2. Now, you must add the like terms. Then, you obtain the following result:

$=5x^{4}-37x^{3}-6x^{2} +41x-6$

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3 years ago

X - y = -2<br> 2x +y = 8

Minchanka [31]

Answer:

4-8=-2

2x+2=8

Step-by-step explanation:

..............................................................................

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3 years ago

A Circus charges two dollars and 50 Cent for kids tickets and six dollars for adults tickets. Last weekend, twice as many kids a

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Answer:

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Luba_88 [7]

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