Advertisements
Advertisements
Question
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
p5 – 16p
Advertisements
Solution
We have,
p5 – 16p = p(p4 – 16) = p[(p2)2 – 42]
= p(p2 + 4)(p2 – 4)
= p(p2 + 4)(p2 – 22)
= p(p2 + 4)(p + 2)(p – 2)
APPEARS IN
RELATED QUESTIONS
Expand 4p2 – 25q2
Factorise the following expressions
m2 + m – 72
Using identity, find the value of (1.9) × (2.1)
Using suitable identities, evaluate the following.
(69.3)2 – (30.7)2
Using suitable identities, evaluate the following.
(729)2 – (271)2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
4x2 – 25y2
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).
a4 – (a – b)4
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
y4 – 81
Verify the following:
`((3p)/7 + 7/(6p))^2 - (3/7p + 7/(6p))^2 = 2`
