oreannakhan oreannakhan
  • 21-10-2019
  • Mathematics
contestada

Which shows equivalent expressions?
a2+3b-2a2=3a2+3b-4a2
a2+3b-2a2=3a2+4b-4a2
-a2+3b-2a2=3a2+3b
-a3+3b+2a2=3a2+4b-2a2

Respuesta :

KurdishPotato
KurdishPotato KurdishPotato
  • 21-10-2019

Step-by-step explanation:

a2 + 3b - 2a2 = 3a2 +3b -4a2

Answer Link
Аноним Аноним
  • 21-10-2019

You can sum terms that involve the same literal expressions:

[tex]a^2+3b-2a^2=3a^2+3b-4a^2 \iff -a^2+3b=-a^2+3b[/tex]

[tex]a^2+3b-2a^2=3a^2+4b-4a^2 \iff -a^2+3b = -a^2+4b[/tex]

[tex]-a^2+3b-2a^2=3a^2+3b \iff -3a^2+3b = 3a^2+3b[/tex]

[tex]-a^3+3b+2a^2=3a^2+4b-2a^2 \iff -a^3+3b+2a^2=a^2+4b[/tex]

So, the only expression whose left and right hand sides are equal is the first.

Answer Link

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