Solve the following equation by identifying all of its roots including any imaginary numbers and multiple roots (x^2-1)(x^2+2)(x+3)(x-4)(x+1)=0

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee

How do i simply this radical expression?