Question

what must be subtracted from4x²to get 6x³-2x²+5x-1?

Answer 1

What must be subtracted from 4x² to get 6x³ - 2x² + 5x - 1

⇒ 4x - ______ = 6x³ - 2x² + 5x - 1

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To find the blank, we will need to:

4x - (6x³ - 2x² + 5x - 1)

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Simplify:

4x - (6x³ - 2x² + 5x - 1)

Distribute -1:

= 4x - 6x³ + 2x²- 5x + 1

Combine like terms:

= - 6x³ + 2x²- x + 1

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Answer: - 6x³ + 2x²- x + 1

Answer 2

Hey Friend
Here is your answer

Let the missing word = a
6x3 - 2x2 + 5x - 1 = 4x2 - a
a = 4x2 - ( 6x3 - 2x2 + 5x - 1 )
a = 4x2 - 6x3 + 2x2 - 5x + 1
a = - 6x3 + 6x2 - 5x + 1
Missing word = - 6x3 + 6x2 - 5x + 1
- 6x cube + 6x square - 5x + 1

Hope this helped you
Have a nice day.