Question

find the sum of the following algebraic expressions : 3x³ - 5x² + 2x + 1 , 3x - 2x² - x³ , 2x² - 7x + 9​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

AnsweR :

$\sf \large \bold \pink{ = {2x}^{3}- {5x}^{2} - 2x + 10}$

SolutioN :

$\sf \: sum \: of \: following \: algebraic \: expression:$

$\sf {3x}^{3} - {5x}^{2} + 2x + 1 \: , \: 3x - {2x}^{2} - {x}^{3} \: , \: {2x}^{2} - 7x + 9$

$\sf = {3x}^{3} - {5x}^{2} + 2x + 1 \: + \: 3x - {2x}^{2} - {x}^{3} \: + \: {2x}^{2} - 7x + 9$

$\sf = {3x}^{3} - {x}^{3} - {5x}^{2} \cancel{ - {2x}^{2} + {2x}^{2} } + 2x + 3x - 7x + 1 + 9$

$\sf = {2x}^{3}- {5x}^{2} - 2x + 10$