MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Factorisation Using Algebraic Identities

Factorise: l+...

Question

Factorise:
$(l + m)^{2} - 4 l m$

Open in App

Solution

$(l + m)^{2} - 4 l m = l^{2} + m^{2} + 2 l m - 4 l m = l^{2} + m^{2} - 2 l m = l^{2} - 2 l m + m^{2} = (l - m)^{2} {∵ a^{2} + 2 a b + b^{2} = (a + b)^{2}}$

Suggest Corrections

thumbs-up

181

Similar questions

{(l + m)}^{2} - 4 l m

(l + m)^{2} - 4 l m

Q. Queston 1(vii)
Factorise the following expressions

(l + m)^{2} - 4 l m

Q. Factorise the following expression:

(l + m)^{2} - 4 l m

Q. Factorise ( l + m)sq — 4lm

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Method of Identities

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Factorisation Using Algebraic Identities

Standard VIII Mathematics

Join BYJU'S Learning Program

CrossIcon