Question

A'2+2ab+b'2:a'2-b'2,при a=4:7,b=3:7​

Answer 1

Ответ:

на фото все написано:)

Answer 2

To find the value of the expression A^2 + 2ab + B^2 : A^2 - B^2, given A = 4/7 and B = 3/7, we can substitute these values into the expression and perform the necessary calculations.

First, let's substitute the given values:

A^2 + 2ab + B^2 : A^2 - B^2 = (4/7)^2 + 2(4/7)(3/7) + (3/7)^2 : (4/7)^2 - (3/7)^2

Next, we'll simplify the expression:

= 16/49 + 24/49 + 9/49 : 16/49 - 9/49 = (16 + 24 + 9)/49 : (16 - 9)/49 = 49/49 : 7/49 = 49/7 = 7

Therefore, the value of the expression A^2 + 2ab + B^2 : A^2 - B^2, when A = 4/7 and B = 3/7, is 7.