Advertisements
Advertisements
प्रश्न
Factorise the expression and divide them as directed:
(9x2 – 4) ÷ (3x + 2)
Advertisements
उत्तर
We have,
`(9x^2 - 4) ÷ (3x + 2) = (9x^2 - 4)/(3x + 2)`
= `((3x)^2 - (2)^2)/(3x + 2)`
= `((3x + 2)(3x - 2))/(3x + 2)` ...[∵ a2 – b2 = (a + b)(a – b)]
= 3x – 2
APPEARS IN
संबंधित प्रश्न
Using the identity (a + b)(a – b) = a2 – b2, find the following product
(6x + 7y)(6x – 7y)
Factorise the following algebraic expression by using the identity a2 – b2 = (a + b)(a – b)
x4 – y4
The pathway of a square paddy field has 5 m width and length of its side is 40 m. Find the total area of its pathway. (Note: Use suitable identity)
Using suitable identities, evaluate the following.
(69.3)2 – (30.7)2
Using suitable identities, evaluate the following.
(339)2 – (161)2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
x4 – y4 + x2 – y2
The sum of (x + 5) observations is x4 – 625. Find the mean of the observations.
The base of a parallelogram is (2x + 3 units) and the corresponding height is (2x – 3 units). Find the area of the parallelogram in terms of x. What will be the area of parallelogram of x = 30 units?
Find the value of a, if 9a = 762 – 672
Find the value of a, if pqa = (3p + q)2 – (3p – q)2
