The fourth term of a g.p is the square of its second term and the first term is -3. Determine its seventh term.
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given a₄ = (a₂)² and a = -3
a₄ = ar³ and a₂ = ar¹
Step-by-step explanation:
ar³ = a²r²
r = a = -3
therefore a = -3 and r = -3
a₇ = ar⁶
=> (-3)(-3)⁶
=> (-3)⁷
=> - 2187
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