Math
posted by elisabeth .
(a+bx)(c+dx)=income
solve for x

FOIL
ac+adx+bcx+ dbx^2=income
db x^2+ (ad+bc)x+ (acincome)=0
now, use the quadratic equation to solve for x. Without numerals, it is complicated.
posted by elisabeth .
(a+bx)(c+dx)=income
solve for x
FOIL
ac+adx+bcx+ dbx^2=income
db x^2+ (ad+bc)x+ (acincome)=0
now, use the quadratic equation to solve for x. Without numerals, it is complicated.