kbest02 kbest02

03-04-2020
Mathematics

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Find the sum of the given polynomials. 3x ^2 + 2x - 5 and -4 + 7x ^2

Respuesta :

Hrishii Hrishii

03-04-2020

Answer:

[tex] 10 {x}^{2} + 2x - 9[/tex]

Step-by-step explanation:

[tex](3 {x}^{2} + 2x - 5) + ( - 4 + 7 {x}^{2}) \\ = 3 {x}^{2} + 2x - 5+ 7 {x}^{2} - 4 \\ = 3 {x}^{2} + 7 {x}^{2} + 2x - 5- 4 \\ = 10 {x}^{2} + 2x - 9[/tex]

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