Using laws of exponents, simplify and write the answer in exponential form:
a) 3^2 x 3^4 x 3 ^6
b) 6^15 ÷ 6^12
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a) 3² × 3⁴ × 3⁶
a^m × a^n = a ^ m+n
= 3²+⁴+⁶
= 3¹² = 531441
b) 6¹⁵ ÷ 6¹²
a^m ÷ a^n = a ^ m-n
6¹⁵ ÷ 6¹² = 6¹⁵-¹²
= 6³ = 216
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