Bonjour,
C=(6x-7)²-(2x-3)²
=36x²-84x+49-(4x²-12x+9)
=36x²-84x+49-4x²+12x-9
C=-32x²-72x+40
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Bonjour,
C=(6x-7)²-(2x-3)²
=36x²-84x+49-(4x²-12x+9)
=36x²-84x+49-4x²+12x-9
C=-32x²-72x+40