Question

СРОЧНО!!! Решите пожалуйста. Буду очень благодарен.)

Answer 1

$sqrt{7+sqrt{3+x}}-4=0\sqrt{7+sqrt{3+x}}=4\7+sqrt{3+x}=16\sqrt{3+x}=9\3+x=81\x=78\ODZ: 3+xgeq 0, xgeq -3\ left { {{x=78} atop {xgeq -3}} right. , x=78$

$|x+2|-|x-1|=x-1.5\I) x textless -2 = textgreater |x-1|=1-x, |x+2|=-x-2\-x-2+x-1=x-1.5\-3=x-1.5\ left { {{x=-1.5} atop {x textless -2}} right. NoSolutions\\II) -2leq x textless 1 = textgreater |x-1|=1-x, |x+2|=x+2\x+2+x-1=x-1.5\ left { {{x=-2.5} atop {-2leq x textless 1}} right. , NoSolutions\\III)xgeq 1 = textgreater |x-1|=x-1, |x+2|=x+2\x+2-x+1=x-1.5\ left { {{x=4.5} atop {xgeq 1}} right. , x=4.5$

Answer 2

Спасибо)