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an equation that can be written in the form y = ax2 + bx + c, where a, b and c are real numbers, and a ≠ 0. The highest power of the variable is 2..
the notation (standardised set of rules and symbols) that allows us to describe an interval (of...
the difference between any two consecutive terms in an arithmetic sequence. The constant...
a value towards which a sequence or series tends; or a position towards which a line moves.