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Melhdu74
@Melhdu74
April 2019
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Factoriser ces deux expressions, vous donnerez les étapes.
A =
-4
B =
-11
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bouki83
Bonsoir,
A=x²-4
A=x²-2² (identité remarquable a²-b²=(a-b)(a+b))
A=(x-2)(x+2)
B=x²-11 (identité remarquable a²-b²=(a-b)(a+b))
11=(√11)²
B=x²-(√11)²
B=(x-√11)(x+√11)
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A=x²-4
A=x²-2² (identité remarquable a²-b²=(a-b)(a+b))
A=(x-2)(x+2)
B=x²-11 (identité remarquable a²-b²=(a-b)(a+b))
11=(√11)²
B=x²-(√11)²
B=(x-√11)(x+√11)