Question

Evaluste using identify 25²-30²​

Answer 1

Answer:

By identity,

\boxed{a^2 - b^2 = (a+b)(a-b)}

a 2 −b 2 =(a+b)(a−b)\implies 75^2 - 25^2 = (75+25)(75-25)⟹75 2 −252 =(75+25)(75−25)\implies 75^2 - 25^2 = (100)(50)⟹75 2 −25 2 =(100)(50)\implies 75^2 - 25^2 = 5000⟹75 2 −25 2 =5000Verification:75^2 - 25^275 2 −25 2\implies 5625 - 625⟹5625−625\implies 5000⟹5000\boxed{\implies{\boxed{Hence \ 75^2 - 25^2 = 5000}}}⟹ Hence 75 2 −25 2 =5000

Answer 2

Answer:

-275

Step-by-step explanation:

25^2 -30^2

625-900

-275