1)x=26; x=14;
2)x=+-2;
3)x=+-1; x=+-3
Объяснение:
1)4(5-025х)^2=9
(5-0.25x)^2=9/4
5-0.25x=+-3/2
x=26;
x=14
2)(3х+2)^2=12х+40
9x^2+12x+4=12x+40
9x^2+4=40
9x^2=36 /9
x^2=4
x=+-2
3)48-3(х^2-5)^2=0
-3(x^2-5)^2= -48
(x^2-5)^2=16
x^2-5=+-4
x=+-1;
x=+-3
1)x=26; x=14;
2)x=+-2;
3)x=+-1; x=+-3
Объяснение:
1)4(5-025х)^2=9
(5-0.25x)^2=9/4
5-0.25x=+-3/2
x=26;
x=14
2)(3х+2)^2=12х+40
9x^2+12x+4=12x+40
9x^2+4=40
9x^2=36 /9
x^2=4
x=+-2
3)48-3(х^2-5)^2=0
-3(x^2-5)^2= -48
(x^2-5)^2=16
x^2-5=+-4
x=+-1;
x=+-3