Orice problema . Cine le face pe toate are coroana si puncte in plus

Răspuns:

Explicație pas cu pas:

3.

3/2(x + 1/2) +1/3 = 5/6

3/2(x + 1/2) = 5/6 - 1/3 = 5/6 - 2/6 = 3/6 = 1/2

x + 1/2 = 1/2 : 3/2 = 1/2 * 2/3 = 1/3

x = 1/3 - 1/2 = 2/6 - 3/6 = -1/6

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4.

√18 - √50 + √200 = 3√2 - 5√2 + 10√2 = 8√2

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1. [(-2/5+1/2-1/3):7/15]³+1/8=

=[(-12/30+15/30-10/30):7/15]³+1/8=

=[(3/30-10/30):7/15]³+1/8=

=(-7/30:7/15)³+1/8=

=(-7/30×15/7)³+1/8=

=(-1/2)³+1/8=

= -1/8+1/8=0

3. 3/2(x+1/2)+1/3=5/6

3x/2+3/4+1/3=5/6

18x/12+9/12+4/12=10/12

18x+9+4=10

18x+13=10

18x=10-13

18x= -3

x= -3/18

x= -1/6

4. √18-√50+√200=

=3√2-5√2+10√2=

= -2√2+10√2=8√2