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clem80302
@clem80302
January 2021
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Bonjours
j'aurais besoin d'un service.
factoriser chaque expression
b- 9xau carré +42x+49
c- x au carré - 9 sur 16
d- 1-16y au carré
merci bcp
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GHANAMI
Verified answer
Bonjour voici une solution :
9x²+42x+49=(3x)² +2(3x)(7)+7²
9x²+42x+49=(3x+7)²
(x²-9)/16=(x²/16)-(9/16)
= (x/4)²-(3/4)²
(x²-9)/16=((x/4)-(3/4))
((x/4)+(3/4))
1-16y²=1²-(4y)²
1-16y²=(1-4y)(1+4y)
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GHANAMI
appuyer sur le bouton 'merci'
GHANAMI
je suis algérien
GHANAMI
en Algérie
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Verified answer
Bonjour voici une solution :9x²+42x+49=(3x)² +2(3x)(7)+7²
9x²+42x+49=(3x+7)²
(x²-9)/16=(x²/16)-(9/16)
= (x/4)²-(3/4)²
(x²-9)/16=((x/4)-(3/4))((x/4)+(3/4))
1-16y²=1²-(4y)²
1-16y²=(1-4y)(1+4y)