victoria032066 victoria032066

15-09-2019
Mathematics

contestada

What is the sum of 2m^2+3m-4 and m^2-3m-2
1) m^2-6
2)3m^2-6
3)3m^2+6m-6
4)m^2+6m-2
Please explain how you got your answer

Respuesta :

jimrgrant1 jimrgrant1

16-09-2019

Answer:

3m² - 6

Step-by-step explanation:

Summing the 2 expressions

2m² + 3m - 4 + m² - 3m - 2 ← collect like terms

= (2m² + m²) + (3m - 3m) + (- 4 - 2)

= 3m² + 0 + (- 6) = 3m² - 6

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