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Which of the following expressions are equivalent ?

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

"which statement is necessarily true if bd is an altitude to the hypotenuse of right ? abc? a.) ? adb? ? bdc b.) ? adb~? bdc c.) abbc=acbd d.) ? bac? ? bdc"