Question

Rezolvati ecuatiile :
a) 2+2 la puterea a 2 a + x =2 la puterea a 3 a + 2 la puterea a 2 a
B ) 5 la puterea a 2 a - x = 5
C ) 3 la puterea a 2 a × x + 3 = 3 la puterea a 3 a + 2 la puterea a 2 a

Answer 1

a)2+2² +x=2³+2²
2+4+x=8+4
6+x=12
x=12-6
x=6
b) 5²-x=5
25-x=5
x=25-5
x=20
c)3² *x+3=3³+2²
9x+3=27+4
9x+3=31
9x=31-3
9x=28
x=28/3

Answer 2

a) 2+4+x=8+4⇔6+x=12⇒x=6
b)25-x=5⇒x=20
c)9×x+3=27+4⇔9×x+3=31⇔9×x=31-3⇔9×x=28⇒x=28÷9⇒x=3 rest 1