Question

find the Value of (249) ka square - (248)ka square​

Answer 1

Answer:

497

Step-by-step explanation:

by using the formula , a^2-b^2=(a+b)*(a-b)

Let a=249 , b=248

(249)^2-(248)^2 = (249+248) * (249-248)

= (497) * (1)

=497

Answer 2

Step-by-step explanation:

using this identity

$(a - b)(a + b) = {a}^{2} - {b}^{2}$

we can implement the values

• taking a = 249 = 250 - 1
• b = 248 = 250 - 2

${249}^{2} - {248}^{2} \\ {(250 - 1)}^{2} - {(250 - 2)}^{2} \\ (250 - 1 + 250 - 2)(250 - 1 - (250 - 2)) \\ (500 - 3)(250 - 1 - 250 + 2) \\ 497( 1 ) \\ 497$