x为何值时下列各式有意义?(1)√x²,(2)√x-4,(3) √x+1 +√1-x,(4) x-3分之√x-1
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![x为何值时下列各式有意义?(1)√x²,(2)√x-4,(3) √x+1 +√1-x,(4) x-3分之√x-1](/uploads/image/z/7307933-5-3.jpg?t=x%E4%B8%BA%E4%BD%95%E5%80%BC%E6%97%B6%E4%B8%8B%E5%88%97%E5%90%84%E5%BC%8F%E6%9C%89%E6%84%8F%E4%B9%89%3F%281%29%E2%88%9Ax%26%23178%3B%2C%282%29%E2%88%9Ax-4%2C%283%29+%E2%88%9Ax%2B1+%2B%E2%88%9A1-x%2C%284%29+x-3%E5%88%86%E4%B9%8B%E2%88%9Ax-1)
x为何值时下列各式有意义?(1)√x²,(2)√x-4,(3) √x+1 +√1-x,(4) x-3分之√x-1
x为何值时下列各式有意义?
(1)√x²,(2)√x-4,(3) √x+1 +√1-x,(4) x-3分之√x-1
x为何值时下列各式有意义?(1)√x²,(2)√x-4,(3) √x+1 +√1-x,(4) x-3分之√x-1
(1·)R.(2)x>4.(3)-1