Question
Développe puis réduis les expressions suivantes.
H = (a + 7)(a + 2)
J = (5 + 23x - 4)
L = (x - 9)(5x + 3) + 4(2x - 5)
Aaider moi svp
H = (a + 7)(a + 2)
J = (5 + 23x - 4)
L = (x - 9)(5x + 3) + 4(2x - 5)
Aaider moi svp
Asked by: USER9232
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Answer (160)
at_explanation_text_math
Bonjour,
H=(a+7)(a+2)
=a(a+7)+2(a+7)
=[tex]a^{2}[/tex]+7a+2a+14
=[tex]a^{2}[/tex]+9a+14
J=(5+23x-4)
=1+23x
L=(x-9)(5x+3)+4(2x-5)
=5x(x-9)+3(x-9)+8x-20
=5[tex]x^{2}[/tex]-45x+3x-27+8x-20
=5[tex]x^{2}[/tex]-34x-47
J’espère que ça va te servir.