What is the standard form of y= (x-12) (x+3) ?
1 Answer
Jan 30, 2016
x^2 - 9x - 36
Explanation:
Each term in the 2nd bracket must be multiplied by each term
in the 1st bracket.This can be done as : x (x+3) - 12(x+3)
distribute :
x^2 + 3x - 12x - 36 collect 'like terms' :
x^2 - 9x - 36
