quadratic-equation
US /kwɑːdˌræt̬.ɪk ɪˈkweɪ.ʒən/
UK /kwɑːdˌræt̬.ɪk ɪˈkweɪ.ʒən/
1.
phương trình bậc hai
an equation that includes an unknown value that is multiplied by itself only once, and does not include an unknown value multiplied by itself more than once:
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In the quadratic equation, 2y2+3y=14, y=2 or y=-3½.