ytaijueracaitlyn ytaijueracaitlyn

26-04-2016
Mathematics

contestada

Subtract and simplify: (3x^2 + 7) – (x^2 – 6x – 4)

Question 3 options:

2x^2 + 6x + 3

4x^2 – 6x + 3

2x^2 + 6x + 11

4x^2 + 3

Respuesta :

amalwazhere amalwazhere

26-04-2016

Distribute the Negative Sign:=3x2+7+−1(x2−6x−4)=3x2+7+−1x2+−1(−6x)+(−1)(−4)=3x2+7+−x2+6x+4Combine Like Terms:=3x2+7+−x2+6x+4=(3x2+−x2)+(6x)+(7+4)
Answer is =2x2+6x+11

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