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practice set 2:3... solve- bythe following quadratic equationCompleting the squase method.x2 +1-2020 |
Answer» <p>third term=( 1÷2 × coefficient of x)whole bracket square there for [1÷2× (-20)]=-10 put in equation x square +x+(-10)-(-10)-20=0. </p> <p>x=14 is the correct answer </p> | |