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Thomaspeguy
@Thomaspeguy
May 2019
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16a au carré - 8a = - 1 , ( 4a - 2)(5a + 7 ) = 0 et (a-2)au carré = 16 s'il vous plait
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Christine17
16a²-8a=-1
16a²-8a+1=0
(4a-1)²=0
4a-1=0
4a=1
a=1/4
( 4a - 2)(5a + 7 ) = 0
4a-2=0 ou 5a+7=0
a=1/2 ou a=-7/5
(a-2)²= 16
a-2=4 ou a-2=-4
a=6 ou a=-2
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16a²-8a+1=0
(4a-1)²=0
4a-1=0
4a=1
a=1/4
( 4a - 2)(5a + 7 ) = 0
4a-2=0 ou 5a+7=0
a=1/2 ou a=-7/5
(a-2)²= 16
a-2=4 ou a-2=-4
a=6 ou a=-2