# 1
Short Answer
다음 식을 전개하라.
25x^2+30xy+9y^2


25x^2+30xy+9y^2

x^2-4xy+4y^2

36a^2+84ab+49b^2

4x^2+28xy+49y^2

25a^2-30ab+9b^2

(x+2y)^2

4(x+y)^2

(2x-y)^2

(a+2b)^2

4(2a-3b)^2

9x^2/4+6xy+4y^2

4x^2/49-2xy+49y^2/4

(5x-3y)^2

(a/3-3/a)^2

(3x/4+3y/2)^2

4x^2

6xy

49v^2

4ab

36b^2
