3x2 - 7x + 2
= 3x2 - 6x - x + 2
= 3x(x - 2) - 1(x - 2)
= (3x - 1)(x - 2)
So x = 1/3 or x = 2
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what are the 2main kinds of roots
The square roots of 4 are -2 and 2.
The two square roots of 4 are 2 and -2. Both {2,-2} when squared, equal positive 4.
1 and the positive and negative square roots of 2
There will be 2 real roots