Advertisements
Advertisements
Question
Expand the following:
`(2"a" + 1/(2"a"))^2`
Sum
Advertisements
Solution
`(2"a" + 1/(2"a"))^2`
= `(2"a")^2 + 2(2"a") (1/(2"a")) + 2"a"^2`
= `4"a"^2 + 2 + (1)/(4"a"^2)`.
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Evaluate the following product without multiplying directly:
95 × 96
Factorise the following:
8a3 + b3 + 12a2b + 6ab2
Write in the expanded form:
(2a - 3b - c)2
Write in the expanded form:
`(a/(bc) + b/(ca) + c/(ab))^2`
If \[x + \frac{1}{x} = 3\], calculate \[x^2 + \frac{1}{x^2}, x^3 + \frac{1}{x^3}\] and \[x^4 + \frac{1}{x^4}\]
Find the following product:
\[\left( \frac{3}{x} - 2 x^2 \right) \left( \frac{9}{x^2} + 4 x^4 - 6x \right)\]
If x = −2 and y = 1, by using an identity find the value of the following
4y2 − 9x2 (16y4 + 36x2y2+81x4)
Evaluate: 20.8 × 19.2
If p + q = 8 and p - q = 4, find:
pq
If m - n = 0.9 and mn = 0.36, find:
m + n
