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postnew [5]
1 year ago
15

PLEASE HELP AND SHOW ALL STEPS

Mathematics
1 answer:
Alja [10]1 year ago
4 0

Combining the like terms, the simplified polynomials are given as follows:

a) 4x² - 14x + 17

b) -5x² - 20x + 8

<h3>How are polynomials simplified?</h3>

Polynomials are simplified combining the like terms, that is, adding these numbers with the same variable.

Item a:

4(x - 2)(x + 1) - 5(2x - 5)

Applying the distributive property:

4(x² - x - 2) - 10x + 25

4x² - 4x - 8 - 10x + 25

Combining the like terms:

4x² - 4x - 10x - 8 + 25

4x² - 14x + 17

Item b:

-5(x + 2)² + 28

-5(x² + 4x + 4) + 28

-5x² - 20x - 20 + 28

-5x² - 20x + 8

More can be learned about the simplification of polynomials at brainly.com/question/24450834

#SPJ1

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Answer:

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Step-by-step explanation:

<em>first you need to </em><em>distribute</em><em>:</em>

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<em>then you </em><em>combine like terms:</em>

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<em>-18+(-7)= -25</em>

<em>simplified:</em>

<u><em>-1x-30</em></u>

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