Advertisements
Advertisements
प्रश्न
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
x2 – 8x + 16
Advertisements
उत्तर
We have,
x2 – 8x + 16
= x2 – 2 × x × 4 + 42
= (x – 4)2 ...[∵ a2 – 2ab + b2 = (a – b)2]
= (x – 4)(x – 4)
APPEARS IN
संबंधित प्रश्न
Factorise the following expressions
y2 – 10y + 25
Using identity, find the value of (4.9)2
A square lawn has a 2 m wide path surrounding it. If the area of the path is 136 m2, find the area of lawn
(a – b)2 + ______ = a2 – b2
1032 – 1022 = ______ × (103 – 102) = ______.
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
p2 – 2p + 1
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
4a2 – 4ab + b2
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
9x2 – 12x + 4
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
`x^2/4 - 2x + 4`
Subtract b(b2 + b – 7) + 5 from 3b2 – 8 and find the value of expression obtained for b = – 3.
