Question

solve using identities​

Answer 1

Answer:

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

Step-by-step explanation:

$(156) ^{2} - (256) ^{2} \\ = (156 + 256)(156 - 256) \\ = 412 \times - 100 \\ = - 41200$

Answer 2

Answer:

-41200

Step-by-step explanation:

Using the identity:

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

we can write

(156)^2-(256)^2

= (156-256)(156+256)

= (-100)×412

= -41200