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Sagot :

AYUDA

7 * * (2x-1) + * (3x+7)

= x² * [7(2x-1) + (3x+7)]

= x² (14x - 7 + 3x + 7)

= x² * 17x

= 17x³

(1+x²) (3x-4) + 2(1+x²)(7x-1)

= (1+x²) [(3x-4) + 2(7x-1)]

= (1+x²) (3x-4+14x-2)

= (1+x²) (17x-6)

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