因式分解 {[(5x+2y)²-(5x-2y)²]+(x-3y)²-(x²-16y²)(x-4y)÷(x+4y)}÷7y
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 16:45:24
![因式分解 {[(5x+2y)²-(5x-2y)²]+(x-3y)²-(x²-16y²)(x-4y)÷(x+4y)}÷7y](/uploads/image/z/806554-10-4.jpg?t=%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3+%7B%5B%285x%2B2y%29%26%23178%3B-%285x-2y%29%26%23178%3B%5D%2B%28x-3y%29%26%23178%3B-%EF%BC%88x%26%23178%3B-16y%26%23178%3B%29%28x-4y%29%C3%B7%28x%2B4y%29%7D%C3%B77y)
因式分解 {[(5x+2y)²-(5x-2y)²]+(x-3y)²-(x²-16y²)(x-4y)÷(x+4y)}÷7y
因式分解 {[(5x+2y)²-(5x-2y)²]+(x-3y)²-(x²-16y²)(x-4y)÷(x+4y)}÷7y
因式分解 {[(5x+2y)²-(5x-2y)²]+(x-3y)²-(x²-16y²)(x-4y)÷(x+4y)}÷7y
{[(5x+2y)²-(5x-2y)²]+(x-3y)²-(x²-16y²)(x-4y)÷(x+4y)}÷7y
={[(5x+2y+5x-2y)(5x+2y-5x+2y)]+(x-3y)²-(x-4y)(x+4y)(x-4y)÷(x+4y)}÷7y
=[40xy+(x-3y)²-(x-4y)²]÷7y
=[40xy+x²-6xy+9y²-(x²-8xy+16y²)]÷7y
=(34xy+x²+9y²-x²+8xy-16y²)÷7y
=(42xy-7y²)÷7y
=6x-y
这中间用到了很多因式分解,但是从结果上看,像是在化简,而不是因式分解,请检查一下,
你抄错了吧