Advertisements
Advertisements
Question
Factorise the following expression.
y2 − 4
Advertisements
Solution
y2 − 4
Let us identify a and b as the difference of squares.
a = y2
b = 22 = 4
= (y)2 − (2)2
a2 − b2 = (a + b) (a − b)
(y)2 − (2)2 = (y + 2) (y − 2)
RELATED QUESTIONS
Factorize each of the following algebraic expressions:
16(2l − 3m)2 −12(3m − 2l)
Factorize each of the following algebraic expression:
9a4 − 24a2b2 + 16b4 − 256
Factorize each of the following algebraic expression:
96 − 4x − x2
Factorize the following algebraic expression:
(x + 2)2 − 6(x + 2) + 9
Factorize each of the following algebraic expression:
25 − p2 − q2 − 2pq
Factorize each of the following algebraic expression:
a2 − 8ab + 16b2 − 25c2
Factorise the following expression.
p2 − q2
Factorise the following expression.
`9"x"^2-1/16"y"^2`
Factorise the following expressions and write them in the product form.
5t2
Factorise the following expression and write them in the product form.
6 ab2.
