find the value of p [{(-3/7)^-2}^3]^p=-7/3^-18
Answers
Answer:
search-icon-header
Search for questions & chapters
search-icon-image
Class 9
>>Maths
>>Number Systems
>>Rationalisation
>>If 5 + 2√(3)/7 + 4√(3) = a + b√(3) , th
Question
Bookmark
If
7+4
3
5+2
3
=a+b
3
, then the value of a and b.
Easy
Solution
verified
Verified by Toppr
7+4
3
5+2
3
=a+b
3
Since rationalization of
c+
d
a+
b
=
c+
d
a+
b
×
c−
d
c−
d
Taking L.H.S.
By rationalization,
7+4
3
5+2
3
=
7+4
3
5+2
3
×
7−4
3
7−4
3
Since, {(a+b)(a−b)=a
2
−b
2
}
=
[(7)
2
−(4
3
)
2
]
(5+2
3
)×(7−4
3
)
=
49−16
3
3
35+14
3
−20
3
−8
3
3
=
49−48
35−
3
(14−8)−24
=
1
35−
3
(6)−24
=11−6
3
Hence, by comparing a = 11 & b = -6.
Answer:
Here is your answer
Step-by-step explanation:
Please mark me as the brainliest ☺️
