You can put this solution on YOUR website! factor the trinomial? -3x2 - 10x - 8
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It'll be (x + b1)*(3x + b2)
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b1 & b2 will be either:
1 & 8 or 2 & 4.
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Do 3x2 + 10x + 8
It's simpler, since everything can be positive, then add one minus sign.
PS Getting the answer won't be of much benefit to you.