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Sagot :

X multiplier

A= 7x²-14xy+21x

A= 7x X x-7x X 2y +7x X 3

A= 7x(x-2y+3)

 

B= (2x-5)²

B= 4x²-10x+25

 

C= (3x-5)²+3x-5

C= (9x²-15x+25)+3x -5

C= 9x²-15x+25+3x -5

C= 9x²+13x-5

 

en esperant t'avoir aidez

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