Question

Помогите решить 2 задание, срочно!!!

Answer 1

$sqrt{33-8x}=xquad OOF:; left { {{x geq 0} atop {33-8x geq 0}} right. ; left { {{x geq 0} atop {x leq 4,125}} right. ; to ; 0 leq x leq 4,125\\33-8x=x^2\\x^2+8x-33=0\\D/4=16+33=49,\\x_1=-4-7=-11notin OOF,\\x_2=-4+7=3\\Otvet:; x=3$