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Svet_ta [14]
3 years ago
10

Hi please this is urgent. Please write a detailed explanation of the error in this equation!!! Tysm in advance

Mathematics
1 answer:
Degger [83]3 years ago
4 0

Answer:

The second and third line are wrong

Step-by-step explanation:

(4x³ +4x²-8x) -(8x²-16x+4)

= 4x³ +4x²-8x - 8x²+ 16x -4  

= 4x³ +4x²- 8x²-8x+ 16x -4

= 4x³ -4x²+ 8x -4

In the second line:

it has to be +16x because - times - is +

it is like -1*(8x²-16x+4)

In the third line:

you can only add or subtract the xs with the same exponentation, so

4x²- 8x² and -8x+ 16x

4x²- 8x²= -4x² not +12x²

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2 years ago
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