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Earn +20 ptsQ: What is the discriminant of 2x 2 plus 5x plus 4?
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3x plus 5x equals 2x plus 2?
3x + 5x = 2x + 28x = 2x + 26x = 2x = (2/6) = 1/3
What is the discriminant of 4x2-2x plus 4 equals 0?
Discriminant = b2-4ac = (-2)2-(4*4*4) = -60
Simplify 5x plus 2x-3y plus y?
5x+2x-3y+y = (5+2)x+(-3+1)y = 7x - 2y
3x plus 2 equals 5x?
3x+2 = 5x so 2x = 2 and hence x = 2/2 = 1
How do you factor 20x2 plus 22xy plus 6y2?
20x2 + 22xy + 6y2 = 20x2 + 10xy + 12xy + 6y2 = 10x(2x + y) + 6y(2x + y) = (2x + y)(10x + 6y) = 2(2x + y)(5x + 3y)
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