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thesilverlark2
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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.
 2 years ago
 2 years ago
thesilverlark2 Group Title
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.
 2 years ago
 2 years ago

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UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.0
the curve cuts the axis when y=0
 2 years ago

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

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
Write 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.
 2 years ago

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

hartnn Group TitleBest ResponseYou've already chosen the best response.1
p+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 ???
 2 years ago

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