Question

(9-√3) (9+√3) ? find it​

Answer 1

Answer:

(9 - √3) (9 + √3) = 78

Step-by-step explanation:

(9 - √3) (9 + √3)

We gonna use an algebraic identity.

(a - b) (a + b) = a² - b²

(9 - √3) (9 + √3)

= 9² - (√3)²

= 81 - 3

= 78

So (9 - √3) (9 + √3) is 78.

Thanks !

Answer 2

Explanation:

We wish to find the product of (9-√3) and (9+√3) .

$\textsf{In this question, we shall be using the property} \:\mathsf{(a-b)(a+b)=a^2-b^2.}$

Here, a = 9 and b = √3.

∴ $\mathsf{(9-\sqrt3) (9+\sqrt3)=9^2- (\sqrt3)^2}$

$\mathsf{=81-3}$

$\mathsf{=78}$

Hence, (9-√3) (9+√3) = 78

Answer: 78

I hope this helps. :D