nisha87
02.08.2019 •
Mathematics
Find the sum: (3x3 + 2x2 + 2x + 1) + (x3 - x2 - x + 2). a. 4x3 + x2 + x + 3 b. 2x3 + 3x2 + 2x + 3 c. 2x3 + x2 - x + 3 d. 4x3 + x2 - x + 3
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Ответ:
Explanation:
(3x³ + 2x² + 2x + 1) + (x³ − x² − x + 2) =
↔ (x³ − x² − x + 2) + (3x³ + 2x² + 2x + 1) =
(x³ − x² − x + 2) + (3x³ + 2x² + 2x + 1) =
x³ − x² − x + 2 + 3x³ + 2x² + 2x + 1 ;
Combine the "like terms" ;
x³ + 3x³ = + 4x³ ;
−x² + 2x² = + x² ;
− x + 2x = + x ;
+ 2 + 1 = + 3 ;
And rewrite:
→ " 4x³ + x² + x + 3 " ;
→ which is: "Answer choice: [A]: " 4x³ + x² + x + 3 " .
Ответ:
( texas was unable to pay debt)
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