lizzyack lizzyack

11-03-2020
Mathematics

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Is the product of -5+ XNX +4 equal to the product of 5+ X and X -4

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devishri1977 devishri1977

11-03-2020

Answer:

No

Step-by-step explanation:

(-5 + x)( x + 4)= -5*(x+4) +x*(x +4 )

= -5x -20 +x² + 4x

= -5x + 4x + x² -20 = -x + x² -20

= x² - x - 20

(5 + x) (x -4) = 5*(x-4) + x (x-4)

= 5x - 20 + x² - 4x

= 5x - 4x +x² -20 = x + x² - 20

= x² + x - 20

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