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Sagot :

CHRYSTINE

Bonjour

A=16-25y²

A=(4-5y)(4+5y)

B=49x²-36)

B=(7x-6)(7x+6)

C=1-9t²

C=(1-3t)(1+3t)

D=(1-2x)²-9x²

D=(1-2x-3x)(1-2x+3x)

D=(1-5x)(1+x)

E=(1+x)²-100

E=(1+x-10)(1+x+10)

E=(x-9)(x+11)

F=49x²-(2x-5)²

F=(-2x+5+7x)(2x-5+7x)

F=(5x+5)(9x-5)

F=5(x+1)(9x-5)

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