Madu3ask
a fost răspuns

1. x(x-2)=-2x+7·3
2. transformati : 0,35 m=.....cm

Răspuns :

a) x(x-2)=-2x+7*32
x²-2x=-2x+224
x²=224
x=4√14
b) 0,35m=35m

Zbratoru2000ask
1) x(x-2)=-2x+7*3
x²-2x=-2x+21/+2x
x²-4x=21÷4
x²=21/4
x=√21/√4
x=√21/2

2)0,35m=35cm

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