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c1 help

I need to factorise 3x^2-13x into brackets like a normal quadratic but i dont know how to because there is no C
Its for plotting graphs so i need it to find the 2 points


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Reply 1
Original post by ksj.11
I need to factorise 3x^2-13x into brackets like a normal quadratic but i dont know how to because there is no C
Its for plotting graphs so i need it to find the 2 points


Posted from TSR Mobile


x(3x-13)=0
x=0 x=13/3
Original post by ksj.11
I need to factorise 3x^2-13x into brackets like a normal quadratic but i dont know how to because there is no C
Its for plotting graphs so i need it to find the 2 points


Posted from TSR Mobile


You can choose c = 0 if necessary. But for the method given above you'll see that it's a bit easier than when there's c, you just need to know how you need to use it. :h:
Reply 3
Original post by imran_
x(3x-13)=0
x=0 x=13/3


i tried that but the answers in the back are different


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Original post by ksj.11
i tried that but the answers in the back are different


Posted from TSR Mobile


You could complete the square

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