Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 8 Answered

evaluatr (-2/7)^-4 × (-5/7)^2

 

Asked by hassantakhi100email | 24 Dec, 2020, 11:57: PM
Expert Answer
(-2/7)-4 x (-5/7)2
= (-7/2)4 x (-5/7)2  ... (Since (a/b)-m = (b/a)m)
= (7/2)4 x (5/7)2    
= (74/24) x (52/72)    (Since (a/b)n = an/bn )
= (72/24) x 52
= (49/16) x 25
= 1225/16
Answered by Renu Varma | 05 Jan, 2021, 11:35: AM
Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment

Concept Videos

Application Videos

Answered Unanswered My Questions My Answers
CBSE 8 - Maths
(y^a-b)^a+b.(y^b-c)^b+c.(y^c-a)^c+b=1
Asked by zarina.begum0 | 02 Jul, 2022, 09:09: AM
ANSWERED BY EXPERT
CBSE 8 - Maths
3/4^7-2/4/5^3*3/5^-2
Asked by sujathavijayarai | 10 Jun, 2022, 08:42: AM
ANSWERED BY EXPERT
CBSE 8 - Maths
I can't solve these questions
Asked by neelamrajputneelamrajput4 | 01 Jun, 2022, 05:25: PM
ANSWERED BY EXPERT
CBSE 8 - Maths
law of exponents
Asked by manavgoel2612 | 08 May, 2022, 11:15: AM
ANSWERED BY EXPERT
CBSE 8 - Maths
(-3)^3×1/4^2
Asked by manasvisinghrana | 02 May, 2022, 09:26: AM
ANSWERED BY EXPERT
CBSE 8 - Maths
(-3)^3×1/4^2
Asked by manasvisinghrana | 02 May, 2022, 09:26: AM
ANSWERED BY EXPERT
CBSE 8 - Maths
2*3^5 - 6*6^4
Asked by saritarawat2121 | 28 Apr, 2022, 06:39: PM
ANSWERED BY EXPERT
CBSE 8 - Maths
expont of 1/343
Asked by maneranjeet813 | 18 Apr, 2022, 10:42: AM
ANSWERED BY EXPERT
CBSE 8 - Maths
find the value of k , 3^k+1 +27^2 =9^4
Asked by shaliniverma19821982 | 25 Feb, 2022, 11:44: PM
ANSWERED BY EXPERT
CBSE 8 - Maths
verify eulers formula....square pyramid
Asked by tapasvisingh961 | 22 Feb, 2022, 06:28: PM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
×