What is the standard form of # y=(11x - 1)(11 - x) #?
1 Answer
Jan 31, 2016
# -11x^2 + 122x - 11#
Explanation:
each term in the 2nd bracket must be multiplied by each term
in the 1st bracket.
written 11x (11 - x ) - 1 (11 - x )
multiply the brackets :
# 121x - 11x^2 - 11 + x # collect 'like terms ' :
# - 11x^2 + 122x - 11 # This is the expression in standard form.
