3x2 - 10x - 8 = (3x + 2) (x - 4)
3x2-4x-15 = 0 (3x+5)(x-3) = 0 x = -5/3 or x = 3
3x2+x-4 = 0 (3x+4)(x-1) = 0 Solutions: x = 1 and x = -4/3 By using the quadratic equation formula.
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x = 45 x 100/19 = 236.84
x = +/- sqrt(y/3)
The absolute value of 19 is 19. If x is positive , absolute x equals x.
x + 10 = 19 x = 19 - 10 x = 9
x = -1y = 33x2 - y2 = 3 (-1)2 - (3)2 = 3 (1) - 9 = -6
Set the equation equal to zero. 3x2 - x = -1 3x2 - x + 1 = 0 The equation is quadratic, but can not be factored. Use the quadratic equation.
3x2 = 21 describes two single values, and does not have an x intercept. 3x2 = 21 ∴ x2 = 7 ∴ x = ±√7
x = 12
x=19
3x2 + 22x + 7 = 3x2 +21x + x + 7 = 3x(x + 7) + (x + 7) = (x + 7)(3x + 1)
3x2 - 10x - 8 = (3x + 2) (x - 4)
The value of x is 2
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