1.

The area of a square is (4x^2-20ab + 25b^2) sq. units. What is the side of the square?

Answer»

Answer:

4a^2-20ab+25b^2 can be WRITTEN as

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

=(2a-5b)^2=area of square= SIDE× side

So side= 2a- 5b



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