kehaansyed kehaansyed
  • 02-03-2020
  • Mathematics
contestada

Find the sum of 2x2 + 3x - 4, 8 - 3x, and -5x2 + 2.

A) -3 x2 - 2
B) -7 x2 - 6 x - 2
C) -3 x2 + 6
D) -7 x2 - 2

Respuesta :

XaniHan
XaniHan XaniHan
  • 02-03-2020
2x^2 +3x -4 +8 -3x -5x^2 +2
-3x^2 + 6

Answer is C) -3x^2 + 6
Answer Link
Branta Branta
  • 02-03-2020

Answer:

C) -3 x2 + 6

Step-by-step explanation:

Given algebraic expressions are:

  • [tex]\[2x^{2}+3x-4\][/tex]
  • [tex]\[8-3x\][/tex]
  • [tex]\[-5x^{2}+2\][/tex]

Adding the given expressions:

[tex]\[2x^{2}+3x-4 + 8-3x + (-5x^{2}+2)\][/tex]

Simplifying:

[tex]\[2x^{2}-5x^{2}+3x-3x-4 + 8 + 2\][/tex]

[tex]\[= (2-5)x^{2}+(3-3)x+(8 -4 + 2)\][/tex]

[tex]\[= -3x^{2}+6\][/tex]

Among the given options, this is equivalent to option C.

Answer Link

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