Math, asked by machchharmili, 10 months ago

in this sum how -3x come ?

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Answers

Answered by deepak97395

1

Step-by-step explanation:

(x+4)(x-7)

= x(x-7) + 4(x-7)

= x^2 -7x +4x -28

= x^ 2 -3x -28

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