Factorise a^2-2ab+b^2-c^2​

(a-b-c)(a-b+c)

Step-by-step explanation:

a^2-2ab+b^2-c^2

(a-b)^2-c^2

(a-b-c)(a-b+c)

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b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .