qpalzmfg qpalzmfg

30-03-2014
Mathematics

Answered

Can you please help me factor
x^2-9x+18=2x
I know you have to make it =0 so I get
x^2-7x+18=0
I need help finding the two terms that add to -9 and multiply to 18. Please help and explain

Answer :

crisforp crisforp

30-03-2014

x^2 - 11x + 18 =0 <=> x^2 - 2x - 9x +18 = 0 <=> x(x-2) - 9(x-2) = 0 <=> (x-2)(x-9) = 0 => x -2 = 0 or x -9=0 => x=2 or x = 9.

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