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Anda22
a fost răspuns

Ajutor!!
a)6x+12>3x
b)0,4x+2≥0,8
c)√2x-√72>x√8
d)3,7x-18≥19

Răspuns :

Vvvs
a) 6x+12>3x
6x-3x>12
3x>12
x>12/3
x>4
b)0.4x>=0.8-2
0.4x>=-1.2
x>=-1.2/0.4
x>=-3
x<=3
Nitugheorghe57
a)6x+12>3x⇒6x-3x>12⇒3x>12⇒x>12/3⇒x>4
b)0.4x+2≥0.8⇒0.4≥0.8-2⇒0.4x≥-1.2⇒x≥-1.2/0.4⇒x≥-3
c)√2x-√72>√8x⇒√2x-2√2x>6√2⇒-√2x<6√2⇒x>6√2/-√2⇒x>-6
d)3.7x-18≥19⇒3.7x≥18+19⇒3.7x≥37⇒x≥37/3.7⇒x≥10
sucees

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