Advertisements
Advertisements
प्रश्न
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`1/36a^2b^2 - 16/49b^2c^2`
उत्तर
We have,
`1/36a^2b^2 - 16/49b^2c^2 = ((ab)/6)^2 - ((4bc)/7)^2`
= `((ab)/6 + (4bc)/7)((ab)/6 - (4bc)/7)`
= `b^2(a/6 + (4c)/7)(a/6 - (4c)/7)`
APPEARS IN
संबंधित प्रश्न
Factorise the following expressions
m2 + m – 72
Using the identity (a + b)(a – b) = a2 – b2, find the following product
(p + 2)(p – 2)
Evaluate the following, using suitable identity
990 × 1010
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)
Multiply the following:
(a2 – b2), (a2 + b2)
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
3a2b3 – 27a4b
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
9x2 – 1
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
x4 – 1
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`x^2 - y^2/100`
Factorise the expression and divide them as directed:
(9x2 – 4) ÷ (3x + 2)
