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I will use the quadratic equation here. Try discriminant. b^2 -4ac
1^2 - 4(-3)(5) = 61 is > 1, so two real roots
X = -1 +/- sqrt[1^2 - 4(-3)(5)]/2(1)
-1 +/- sqrt(61)/2
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Earn +20 ptsQ: What the answer -3x2 plus x plus 5 plus 0?
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What are the roots of x3 plus 3x2-9x plus 5?
x3 + 3x2 - 9x + 5 = 0 has roots of -5,1 and 1. CHECK : x3 + 3x2 - 9x + 5 = (x + 5)(x - 1)(x - 1)
X2 plus 8x equals -3x2 plus 5?
x2+8x = -3x2+5 4x2+8x-5 = 0 (2x+5)(2x-1) = 0 x = -5/2 or x = 1/2
How many times does 3x2 plus 8x plus 5 touch or cross the x axis?
If you mean: 3x2+8+5 = 0 Then it crosses the x axis at points -1 and -5/3
3x2 plus 11x - 20 equals 0?
(3x-4)(x+5)
Factorize completely 3x2-5x plus 2?
If you meant 3x2 - 5x + 2, here is your answer 3x2 - 5x +2 = 0 => 3x2 - 3x - 2x + 2 = 0 => 3x(x-1) - 2(x-1) = 0 => (3x - 2) (x-1) = 0 => x = 2/3 or, x = 1
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