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It is: 25-4(8*6) = -167

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The discriminant is -167.

Q: What is the discriminant of this equation 8x2 plus 5x plus 6 equals 0?

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(-2)2-4*8*8 = -252 The discriminant is less than zero so there's no solution to the quadratic equation.

8x2 + 16x + 8 = 0

x=5

15 = 8x2 - 14x; whence, 8x2 - 14x - 15 = (2x - 5)(4x + 3) = 0. Therefore, x = 5/2 or -3/4.

There is no equals sign visible but, taking the equation to be8x2 + 2x + 1 = 0,the solutions are the complex conjugate pair, -1.25 Â± 0.330719*i where i is the imaginary square root of -1.

8x2 + 2x - 1 = 8x2 + 4x - 2x - 1 = 4x(2x + 1) - 1(2x + 1) = (4x - 1)(2x + 1)

8x2 + 16x + 8 = 8*(x2 + 2x + 1) = 8*(x + 1)2

16.

You can multiply 8x2 or if you can put addition into the equation you can do (3+5)x2! If you need proof here it is 8x2 can be shown as 8+8 Which equals 16.

-4x2 - 32x + x + 8 = 8x2 - 56x : simplify and group the various terms-32x + 56x + x + 8 = 8x2 + 4x225x + 8 = 12x2 : Now present this as a standard quadratic equation.12x2 - 25x - 8 = 0 : Solving for the roots of a quadratic equation gives :-x = [25 ± √(252 + 4x12x8)] ÷ 2x12 = [25 ± √1009] ÷ 24 = [25 ± 31.765] ÷ 24x = 56.765/24 = 2.365 and x = -6.765/24 = -0.282x = 2.365 and -0.282

(4x + 3)(2x - 1) so x = -0.75 or 0.5

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