M L Aggarwal Solutions for Exercise 3: EXERCISE 4.3

Factorise the following:-

Factorise the following:-

$a^4+b^4-7a^2{b}^2$

Factorise the following:-

$x^4-14x^2+1$

Express each of the following as the difference of two squares:-

Express each of the following as the difference of two squares:-

Express each of the following as the difference of two squares:-

$(x^2+5x-7)(x^2-5x+7)$

Evaluate the following by using factors:-

$(979{)}^2-(21{)}^2$

Evaluate the following by using factors:-

$(99.9{)}^2-(0.1{)}^2$