Advertisements
Advertisements
Question
Factorise the following.
a2 – 16p – 80
Sum
Advertisements
Solution
We have,
p2 – 16p – 80
= p2 – (20 – 4)p – 80
= p2 – 20p + 4p – 80
= p(p – 20) + 4(p – 20)
= (p – 20)(p + 4)
shaalaa.com
Is there an error in this question or solution?
Chapter 7: Algebraic Expression, Identities and Factorisation - Exercise [Page 235]
APPEARS IN
RELATED QUESTIONS
Expand `("x"-2/"x")^2`
Expand: (98)2
Factors of 4 – m2 are
Expand the following square, using suitable identities
(xyz – 1)2
Evaluate the following, using suitable identity
472
a2 – b2 is equal to ______.
Square of 9x – 7xy is ______.
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
x2 – 10x + 25
Factorise the following.
y2 – 2y – 15
If x – y = 13 and xy = 28, then find x2 + y2.
