Question A3: Table 2 in section 2.4 lists some useful summation formulas. Use those fomulas and algebra to determine 26 the value of (3j³ - 2j²). j=12 12².13² 3 [26-27 12:18] -2 [26-27-53 4 4 340249 3 [26²,27² 11²,12²] -2 [26-27-53 — 11-12-23] 4 4 1298256 345145 12.13.24 6

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