👤

Sagot :

Bjr,

(2z + 4)(z + 2) + 4(4z - 2) = 2z² + 4z + 4z + 8 + 16z - 8 = 2z² + 24z

☺ Salut ☺

[tex]\rule{6cm}{1mm}[/tex]

On donne :

[tex]U = (2z + 4)(z + 2) + 4(4z -2)[/tex]

Développons :

[tex]U = (2z + 4)(z + 2) + 4(4z - 2)[/tex]

[tex]\green{U = 2{z}^{2} + 4z + 4z + 8 + 16z - 8}[/tex]

Réduisons :

[tex]\blue{U = 2{z}^{2} + 24z} [/tex]

[tex]\rule{6cm}{1mm}[/tex]

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