Request a call back

Find the value of x, if x raised to the power 5 equals to (5/7) raised to the power -3 × (-5/7) raised to the power 8 Expert Answer
We need to find the value of x if it is given that x5 = (5/7)-3 x (-5/7)8
This question can be solved using laws of exponents as follows:
x5 = (5/7)-3 x (-5/7)8
x5 = (5/7)-3 x (-1)8 x (5/7)8   ...  Using the property (ab)m = am x bm
x5 = (5/7)-3 x (5/7)8
Using the property, am x an = am+n, we get
x5 = (5/7)-3+8
x5 = (5/7)5
Using the property that if am = bm then a = b, we get
x = 5/7
Hence, the value of x is 5/7.
Answered by Renu Varma | 03 Jun, 2020, 04:44: PM
ICSE 8 - Maths Asked by kabeerknp63 | 20 Jan, 2023, 08:57: PM ANSWERED BY EXPERT
ICSE 8 - Maths Asked by kabeerknp63 | 20 Jan, 2023, 08:56: PM ANSWERED BY EXPERT
ICSE 8 - Maths
Asked by souravpaul19 | 24 Jun, 2022, 10:17: AM ANSWERED BY EXPERT
ICSE 8 - Maths ANSWERED BY EXPERT
ICSE 8 - Maths
Asked by guterimeena1977 | 08 Mar, 2022, 12:51: AM ANSWERED BY EXPERT
ICSE 8 - Maths
Asked by ananya93696996 | 23 Aug, 2021, 08:26: PM ANSWERED BY EXPERT
ICSE 8 - Maths
Asked by kpsingh.ks467 | 24 May, 2021, 05:33: PM ANSWERED BY EXPERT
ICSE 8 - Maths
how to evaluate Asked by ashwellronaldr | 29 Mar, 2021, 08:30: PM ANSWERED BY EXPERT
ICSE 8 - Maths
Asked by nihalcrj2006 | 12 Mar, 2021, 11:02: AM ANSWERED BY EXPERT
ICSE 8 - Maths
Asked by kinggta29 | 25 Feb, 2021, 07:03: PM ANSWERED BY EXPERT