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what must be added to 3x-7 to make x^2 + 4x -1

Sagot :

Reinhard10158idn

Step-by-step explanation:

what must be added to 3x - 7 to get x² + 4x - 1 ?

well, what must be added to e.g. 7 to get 11 ?

11 - 7 = 4 must be added.

and in the same way we have to look at more complex expressions too.

(x² + 4x - 1) - (3x - 7) = x² + 4x - 1 - 3x + 7 = x² + x + 6

so, we need to add

x² + x + 6

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