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For the given quadratic equation convert into vertex form, find the vertex and find the value for x=6 y=-2x^2+2x+2

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.

Find a third-degree polynomial equation with rational coefficients that has roots -2 and 6+i