Answer:
81
Step-by-step explanation:
9 x 9 = 81
So, 81 is the perfect square.
- = * - = 9() - 1() = 8()
- =
⇒ 8() =
⇒ = <em>multiplied both sides by 8</em>
⇒ =
⇒ = 3⁻²
⇒ x = -2
Answer: x = -2