Expansion Using Algebraic Identity

Write the Following in Expanded Form

\[ (m + 2n – 5p)^2 \]

Solution:

Using identity:

\[ (a+b-c)^2 = a^2+b^2+c^2+2ab-2bc-2ca \]

\[ (m + 2n – 5p)^2 \]

\[ = m^2 + (2n)^2 + (5p)^2 + 2(m)(2n) – 2(2n)(5p) – 2(m)(5p) \]

\[ = m^2 + 4n^2 + 25p^2 + 4mn – 20np – 10mp \]

Next Question / Full Exercise

Spread the love

Leave a Comment

Your email address will not be published. Required fields are marked *