What is the standard form of # y= (-2x+2)^2 + 5x^2+3x #?
1 Answer
Jan 28, 2016
# 9x^2 - 5x + 4 #
Explanation:
Distribute the brackets using FOIL and collect 'like terms'.
# y = (-2x+2)(-2x+2) + 5x^2 + 3x #
# = 4x^2 - 4x -4x + 4 + 5x^2 + 3x # hence
# y = 9x^2 - 5x +4#
