How many 6 digit numbers can be formed using the digits 2-7 with repetition and without?

2-7 is 6 numbers

with repetition:

6 * 6 * 6 * 6* 6*6 = 46656 ways

without repetition:

6*5*4*3*2*1 = 720 ways

answerthe vertex form

step-by-step explanation:

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation