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
Find the greatest common factor of the terms in each of the following expression:
2xyz + 3x2y + 4y2
Factorize each of the following algebraic expressions:
9a(6a − 5b) −12a2(6a − 5b)
Factorize each of the following algebraic expression:
x2 + 2x + 1 − 9y2
Factorize each of the following algebraic expression:
a2 − b2 + 2bc − c2
Factorize each of the following algebraic expression:
a2 + 2ab + b2 − c2
Factorize each of the following algebraic expression:
a2 + 4b2 − 4ab − 4c2
Factorize each of the following algebraic expression:
40 + 3x − x2
Factorize each of the following algebraic expression:
a2 + 3a − 88
Factorize each of the following algebraic expression:
a2 − 14a − 51
The value of p in the equation `(2"p")/3` = 10 is ________
