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Q: When the expression x power by 2 plus 2x-8 is factoredthe two roots will equal?

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if i ask you.........how?

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A polynomial is an expression of various exponentials of a variable wich may or may nor have coefficients and constants. The coefficients may have a radical, square root, cube root etc, but not the variable. A radical expression is any expression involving square roots, cube roots, etc. These may have the variable inside the radical but do not have to have them. sq root (5) is a radical expression, so is sq root (x) 3x2 + 2x - 9 is a polynomial, so is x + sq root (5)

4 and the two equal roots are 2/5 and 2/5

It will have two equal roots.