brittany671120 brittany671120

30-08-2018
Mathematics

contestada

(3a²+1)—(4+2a²)
do you know the answer

Respuesta :

beecloe beecloe

30-08-2018

collect the like terms calculate

a2-3

Answer Link

jcherry99 jcherry99

30-08-2018

Remark

The key to this one is just to remove the brackets. Be very careful with the right hand bracket.

Remove the brackets.

3a^2 + 1 - 4 - 2a^2 Notice the minus sign affects both the 4 and the 2a^2

3a^2 - 2a^2 = a^2

+ 1 - 4 = - 3

Answer

a^2 - 3

Answer Link

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