Advertisements
Advertisements
प्रश्न
If a2 - 3a - 1 = 0 and a ≠ 0, find : `"a" - (1)/"a"`
Advertisements
उत्तर
Dividing the given equation by a we get
`"a" - 3 - (1)/"a"` = 0
⇒ `"a" - (1)/"a"` = 3.
APPEARS IN
संबंधित प्रश्न
Evaluate the following product without multiplying directly:
103 × 107
Factorise the following using appropriate identity:
4y2 – 4y + 1
Write the following cube in expanded form:
(2x + 1)3
Evaluate the following using identities:
(1.5x2 − 0.3y2) (1.5x2 + 0.3y2)
Simplify (2x + p - c)2 - (2x - p + c)2
Find the following product:
(4x − 5y) (16x2 + 20xy + 25y2)
If \[x + \frac{1}{x}\] 4, then \[x^4 + \frac{1}{x^4} =\]
Use the direct method to evaluate the following products :
(8 – b) (3 + b)
Evaluate, using (a + b)(a - b)= a2 - b2.
15.9 x 16.1
Give possible expressions for the length and breadth of the rectangle whose area is given by 4a2 + 4a – 3.
