Factorize: `25a^2-4b^2+28bc-49c^2`

Factorize: 63a^2-112b^2

Factorize: 49x^2-36

Factorize: a^4-2a^2b^2+b^4

Factorize: 4p^2-9q^2

Fractorise 4a ^(2) + b ^(2) + c ^(2) -4ab + 2bc-4ca using suitable identity.

Factories (i) 25 x ^(2) + 16 y ^(2) + 4z ^(2) - 40 xy + 16 yz - 20xz (ii) 9a ^(2) + 4b ^(2) + 16 c ^(2) + 12 ab - 16 bc - 24 ca

For any three positive real numbers a , b and c ,9(25 a^2+b^2)+25(c^2-3a c)=15 b(3a+c)dot Then :

Factorize the following expressions: 121b^2-88bc+16c^2

Factorize two following expressions. 10a^2-15b^2+20c^2

The area of two similar triangles ABC and PQR are '25 cm^2' and '49cm ^2' If QR=9.8 cm then BC is