Advertisements
Advertisements
Question
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`x^2/9 - y^2/25`
Advertisements
Solution
We have,
`x^2/9 - y^2/25 = (x/3)^2 - (y/5)^2`
= `(x/3 - y/5)(x/3 + y/5)`
APPEARS IN
RELATED QUESTIONS
(x + 4) and (x – 5) are the factors of ___________
(7x + 3)(7x – 4) = 49x2 – 7x – 12
Find the value of (x – y)(x + y)(x2 + y2)
Using suitable identities, evaluate the following.
9.8 × 10.2
Using suitable identities, evaluate the following.
(132)2 – (68)2
Using suitable identities, evaluate the following.
(729)2 – (271)2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
49x2 – 36y2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
1331x3y – 11y3x
Factorise the expression and divide them as directed:
(x3 + x2 – 132x) ÷ x(x – 11)
Factorise the expression and divide them as directed:
(3x2 – 48) ÷ (x – 4)
