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.
