Bonsoir,
a. [tex]2(2x+1)=4x+2[/tex]
b. [tex](4x+5)*3=12x+15[/tex]
c. [tex]x*(3-2x)=-2x^2+3x[/tex]
d. [tex](10-x)*4x=-4x^2+40[/tex]
Bonjour,
a) 2(2x+1) = 2×2x+2×1 = 4x+2
b) (4x+5)×3 = 4x×3+5×3 = 12x+15
c) x×(3-2x) = x×3+x×(-2x) = 3x+(-2x²)
d) (10-x)×4x = 10×4x+(-x)×4x = 40x+(-4x²)
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Bonsoir,
a. [tex]2(2x+1)=4x+2[/tex]
b. [tex](4x+5)*3=12x+15[/tex]
c. [tex]x*(3-2x)=-2x^2+3x[/tex]
d. [tex](10-x)*4x=-4x^2+40[/tex]
Bonjour,
a) 2(2x+1) = 2×2x+2×1 = 4x+2
b) (4x+5)×3 = 4x×3+5×3 = 12x+15
c) x×(3-2x) = x×3+x×(-2x) = 3x+(-2x²)
d) (10-x)×4x = 10×4x+(-x)×4x = 40x+(-4x²)