I want the answer of question 7. Please answer as fast as possible
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1250=2¹×5⁴
By the problem,
2ˣ⁻⁷×5ˣ⁻⁴=2¹×5⁴
⇒2ˣ⁻⁷=2¹ and 5ˣ⁻⁴=5⁴
If bases are equal and the powers are also equal.
⇒x-7=1
⇒x=1+7
⇒x=8
By the problem,
2ˣ⁻⁷×5ˣ⁻⁴=2¹×5⁴
⇒2ˣ⁻⁷=2¹ and 5ˣ⁻⁴=5⁴
If bases are equal and the powers are also equal.
⇒x-7=1
⇒x=1+7
⇒x=8
shreyacherry:
Thanks
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