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thesilverlark2
 3 years ago
A curve with the equation y= (x+p)(x+q) cuts the xaxis at the points A(2,0) and B(6,0). Write down the values of p and q.
thesilverlark2
 3 years ago
A curve with the equation y= (x+p)(x+q) cuts the xaxis at the points A(2,0) and B(6,0). Write down the values of p and q.

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UnkleRhaukus
 3 years ago
Best ResponseYou've already chosen the best response.0the curve cuts the axis when y=0

thesilverlark2
 3 years ago
Best ResponseYou've already chosen the best response.0So sub A(2,0) into the equation? I got stuck because there were too many unknowns :/

Mertsj
 3 years ago
Best ResponseYou've already chosen the best response.1Write a system of two equations. For the first equation, replace x with 2 and y with 0. For the second equation replace x with 6 and y with 0. Now you have two equations with variables p and q. Solve the system.

thesilverlark2
 3 years ago
Best ResponseYou've already chosen the best response.0I got stuck again. Ended up with q+p=4 .

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1p+q=4 is correct, now substitute back in pq+36+6(p+q)=0 to get pq=12 can u find p and q knowing p+q=4 and pq= 12 ???

thesilverlark2
 3 years ago
Best ResponseYou've already chosen the best response.0yeah I got it (: Thank you!
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