Question

if the a² is 4 and a7 is-11. find 16th
terms,​

Answer 1

$a^{2} = 4 \\ </p><p>a+d = 4 ... \: \: \: \: (1) \\ </p><p>and, \: a^{7} = -11 \: \\ </p><p>a+6d = -11...... \: \: \: \: \: \: (2) \\ </p><p>solving \: (1) \: and \: (2) \: \\ </p><p> \: \: \: \: [by \: elimination \: mathod] \\ </p><p> \: \: -5d = 15 \: \\</p><p> \: \: \: \: \: d= -3 \\</p><p> \: \: \: \: a= 7 \\ \\ </p><p></p><p>a^{16} = a+15d \: \\ </p><p>7+15(-3) \\</p><p>7-45</p><p>= 38 \\ \\ \\ \\ hope \: it \: helps \: you \: mark \: brainleist$

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