Advertisements
Advertisements
प्रश्न
a2 – b2 = (a + b) ______.
Advertisements
उत्तर १
a2 – b2 = (a + b) (a – b).
Explanation:
We have, a2 – b2 = (a + b)(a – b) ...[∵ a2 – b2 = (a + b)(a – b)]
उत्तर २
a2 – b2 = (a + b) (a – b).
Explanation:
Let (a2 – b2) = (a + b)x
⇒ `x = (a^2 - b^2)/(a + b)`
= `((a + b)(a - b))/(a + b)`
= a – b
APPEARS IN
संबंधित प्रश्न
The product of (x + 5) and (x – 5) is ____________
(7x + 3)(7x – 4) = 49x2 – 7x – 12
(5 + 20)(–20 – 5) = ?
Factorise: 4x2 – 9y2
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)
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
25ax2 – 25a
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
y4 – 81
The sum of (x + 5) observations is x4 – 625. Find the mean of the observations.
Verify the following:
(p – q)(p2 + pq + q2) = p3 – q3
Find the value of a, if pqa = (3p + q)2 – (3p – q)2
