victoria032066 victoria032066

15-09-2019
Mathematics

contestada

The sum of 8x^2-x+4 and x-5 is
1) 8x^2+9
2)8x^2-1
3)8x^2-2x+9
4)8x^2-2x-1
Please explain how you got your answer

Respuesta :

jimrgrant1 jimrgrant1

15-09-2019

Answer:

8x² - 1

Step-by-step explanation:

Summing the 2 expressions together gives

8x² - x + 4 + x - 5 ← collect like terms

= 8x² + (- x + x) + (4 - 5)

= 8x² + 0 + (- 1) = 8x² - 1

Answer Link

Katieg3593 Katieg3593

15-09-2019

Answer:

Option 2

Step-by-step explanation:

8x²-x+4

+ x-5

=

8x²-1

Answer Link

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