Question

विस्तार सूत्र वापरून गुणाकार लिहा- $\bigg \lgroup \frac{x}{5} + 6\bigg \rgroup \bigg \lgroup \frac{x}{5} - 6\bigg \rgroup$

Answer 1

(x/5+6)(x/5-6)

x²/25 -36

Answer 2

Identity to be used :

(A+B)(A-B) = A²-B²

Given statement :

$( \frac{x}{5} + 6)( \frac{x}{5} - 6) \\ \\ = ( \frac{x}{5} ) ^{2} - {6}^{2} \\ \\ = \frac{ {x}^{2} }{25} - 36 \\ \\ \frac{ {x}^{2} - 900 }{25}$

What is an algebraic expression?

=> The mathematical expressions which contain both the constant and variables in them are known as algebraic expressions.