Question

सूत्राचा उपयोग करून गुणाकार करा: (x - 5) (x + 5)

Answer 1

सूत्राचा उपयोग करून गुणाकार लिहा- (x + 5) (x - 5)

We are aware of this identity,

(a + b) (a - b) = a^2 - b^2

Similarly,

In your question,

$\tt{(x + 5) (x - 5) = {x}^{2} - 5{}}^{2}$

Simplifying it further,

we get :

$\tt{ = {x}^{2} - {25}^{}}=x$

Thus,

x^2 - 25 is the answer.

Answer 2

प्रश्नः

सूत्राचा उपयोग करून गुणाकार करा: (x - 5) (x + 5)

उत्तरः

सुत्र: (a - b)(a + b) = a² - b²

=> (x - 5) (x + 5) = (x)² - (5)²

= x² - 25