Tolong dong jwb pertanyaan ini???

[tex]sn = {2n}^{2} - 3n + 5 \\ s1 = 2.1 - 3.1 + 5 = 4[/tex]
nilai a= 4
[tex]s2 = 2. {2}^{2} - 3.2 + 5 \\ = 2.4 - 6 + 5 \\ = 8 - 6 + 5 = 7[/tex]
maka nilai b= 7-4= 3

maka suku ke 10 = a+(n-1)b
[tex]4 + (10 - 1)7 \\ = 4 + 9.7 \\ = 4 + 63 = 67[/tex]