Question

Find using identities (12.5)^2-(7.5)^2

Answer 1

${\red{\huge{hello!!!}}}$

The identity which can be used to solve this question is:-${\boxed{\bold{a^2-b^2}}}$

So,
a=12.5
b=7.5
the identity further expands as
${\boxed{\bold{a+b×{a-b}}}}$

so,

solution:-
=(12.5+7.5)×(12.5-7.5)
=20×5
${\boxed{\bold{\blue{\huge{solution=100}}}}}$

hope it helps you enough, plz mark it as $brainliest.$

Answer 2

Answer:

100

Step-by-step explanation:

Simplyfying 12.5 ² to 156.25

156.25−7.5 ​²

Simlpyfying 7.5² to 56.25

156.25-56.25

Answer

100