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Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount