Question

Rez ecuatiile

0,19x+5=x+7,7

3radical2+x=radical2(x-radical2)+5

Dau fundita dau ce vreti voi

Answer 1

Răspuns:

Explicație pas cu pas:

0 , 19x + 5 = x + 7 , 7

0 , 19x - x = 7 , 7 - 5

- 0 , 81x = 2 , 7

x = - 10 / 3

3√2 + x = √2 × ( x - √2 ) + 5

3√2 + x = √2x - 2 + 5

3√2 + x = √2x + 3

x - √2x = 3 - 3√2

( 1 - √2 )x = 3 - 3√2

x = ( 3 - 3√2 ) / ( 1 - √2 )

x = [ 3 × ( 1 - √2 ) ] / ( 1 - √2 )

x = 3