Question

() x2 - 10x + 9 = 0
$x2 + 10x + 9 = 0$
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Answer 1

Answer:

To factor you must play with factors which multiply to 9

(1×9, 3×3, 9×1)

(x−9)(x−1)=0

Now, solve each factor for 0:

x−9=0

x−9+9=0+9

x−0=9

x=9

and

x−1=0

x−1+1=0+1

x−0=1

x=1