Question

expand the following
(2a-5b)^2 ​

Answer 1

Answer:

Sorry,

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Khair.

Ye le Answer

(2a-5b)^2

Using Identity

(x-y)^2 =x^2+y^2-2xy

(2a-5b)^2 = (2a)^2 + (5b)^2 -2(2a)(5b)

=4a^2 +25b^2 - 20 ab

Answer 2

$42−20+252$

is answer

refer the attachment and thanks