do any one know how to do this math problem
By jaxky16
@jaxky16 (53)
United States
1 response
@owlwings (43915)
• Cambridge, England
18 Nov 08
If the task is to simplify the expression, do the following:
Remove the brackets by multiplication.
y(y+4)-y(y-3)-9y = y²+4y-y²+3y-9y
Collect and evaluate terms of the same order. The terms in y² cancel out and the expression reduces to -2y
y²+4y-y²+3y-9y = 7y-9y = -2y
@owlwings (43915)
• Cambridge, England
18 Nov 08
It's always wise to check someone else's working, hehe.
