find x if plz with explaintion
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Step-by-step explanation:
(-5/4)⁸ × (-5/4)¹² = (-5/4)x+9
(-5/4)⁸±¹². = (-5/4)x+9
( -5/4)²⁰= (-5/4)x+9
on comparing powers we get
x+9 = 20
x. =. 20-9
x. = 11
Answered by
1
Answer: (-5\4)^8 * (-5\4)^12 = (-5\4)^x+9
=> (-5\4)^8+12 = (-5\4)^x+9
=> (-5\4)^20 = (-5\4)^x+9
Since, base is same in both sides
Therefore, comparing the powers, we get
=> x+9 = 20
=> x = 20-9
=> x = 11
Therefore, x = 11
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