3.14×(X+5)²=2×3.14ײ(X+5)²=2ײ(X+5)²-2ײ=0X²-10X-25=0(X-5)²-50=0为什么 X²-10X-25=0之后(X-5)²-50=0
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 21:42:16
![3.14×(X+5)²=2×3.14ײ(X+5)²=2ײ(X+5)²-2ײ=0X²-10X-25=0(X-5)²-50=0为什么 X²-10X-25=0之后(X-5)²-50=0](/uploads/image/z/1978637-5-7.jpg?t=3.14%C3%97%EF%BC%88X%EF%BC%8B5%EF%BC%89%26%23178%3B%EF%BC%9D2%C3%973.14%C3%97%26%23178%3B%EF%BC%88X%EF%BC%8B5%EF%BC%89%26%23178%3B%EF%BC%9D2%C3%97%26%23178%3B%EF%BC%88X%EF%BC%8B5%EF%BC%89%26%23178%3B%EF%BC%8D2%C3%97%26%23178%3B%EF%BC%9D0X%26%23178%3B%EF%BC%8D10X%EF%BC%8D25%EF%BC%9D0%EF%BC%88X%EF%BC%8D5%EF%BC%89%26%23178%3B%EF%BC%8D50%EF%BC%9D0%E4%B8%BA%E4%BB%80%E4%B9%88+X%26%23178%3B%EF%BC%8D10X%EF%BC%8D25%EF%BC%9D0%E4%B9%8B%E5%90%8E%EF%BC%88X%EF%BC%8D5%EF%BC%89%26%23178%3B%EF%BC%8D50%EF%BC%9D0)
3.14×(X+5)²=2×3.14ײ(X+5)²=2ײ(X+5)²-2ײ=0X²-10X-25=0(X-5)²-50=0为什么 X²-10X-25=0之后(X-5)²-50=0
3.14×(X+5)²=2×3.14ײ
(X+5)²=2ײ
(X+5)²-2ײ=0
X²-10X-25=0
(X-5)²-50=0
为什么 X²-10X-25=0之后(X-5)²-50=0
3.14×(X+5)²=2×3.14ײ(X+5)²=2ײ(X+5)²-2ײ=0X²-10X-25=0(X-5)²-50=0为什么 X²-10X-25=0之后(X-5)²-50=0
x²-10x+(25-25)-25=0
x²-10x+25-25-25=0
(x-5)²-50=0