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  • Roma
  • Community Manager
2010-01-20T10:26:57+01:00
A}3x+7
(2x - 1)² + 3(⅔*x + ⅓) - 4(x² + 5) + 5(x +3) + 10 = 3x + 7

b}-x+y
3(x - 2y) - 4(x - y) + 3y = -x + y

c}2xy +y*y
(2x - y)² - (x - y)² - 3(x + y)² + 4y(3x + y) - 2xy = 2xy + y²
59 3 59