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a fost răspuns

Rezolvati ecuatia: 12X + 3 x (452-21 la puterea 2) =2X + 103. Sunt disperata.

Răspuns :

Iakabcristina2
12x+3·(452-441)=2x+103
12x+3·11=2x+103
10x=103-33
10x=70
x=7
12x+3×(452-21²)=2x+103
12x+3×(452-441)=2x+103
12x+3×11=2x+103
12x+33=2x+103
12x-2x=103-33
10x=70
x=70:10
x=7

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