Explications étape par étape:
a) 3(5 + x)
= 3×5 + 3×x
= 15 + 3x
b) 7(x - 8)
= 7×x - 7×8
= 7x - 56
c) 10(y + 9)
= 10×y + 10×9
= 10y + 90
d) x(6 - x)
= x×6 - x×x
= 6x - x²
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
Explications étape par étape:
a) 3(5 + x)
= 3×5 + 3×x
= 15 + 3x
b) 7(x - 8)
= 7×x - 7×8
= 7x - 56
c) 10(y + 9)
= 10×y + 10×9
= 10y + 90
d) x(6 - x)
= x×6 - x×x
= 6x - x²