whitakers87
07.01.2020 •
Mathematics
What is the error in the student work below?
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Ответ:
The negative 16 in the second line should be positive 16.
See attached picture:
Ответ:
This is +16x not minus 16x as shown in the problem
Step-by-step explanation:
4x^3 + 4x^2 -8x-(8x^2 -16x+4)
Distribute the minus sign
4x^3 + 4x^2 -8x-8x^2 +16x-4
The error is here This is +16x not minus 16x as shown in the problem
4x^3 -4x^2 +8x-4
Ответ:
X = 9
Step-by-step explanation:
6(x−3)=3x+9
(6)(x)+(6)(−3)=3x+9
6x+−18=3x+9
6x−18=3x+9
6x−18−3x=3x+9−3x
3x−18=9
3x−18+18=9+18
3x=27
3x /3 = 27 /3