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This is kind of non-specific, but I'm assuming you're looking for the values of x that will make the following true:
x3-2x2-8x = 0
To find these values of x, you must factor the polynomial expression to the left of the equal sign.
x3-2x2-8x = x(x2-2x-8) = x(x-4)(x+2) = 0
By the zero identity, setting each individual factor equal to zero will yield a valid solution to the original equation:
x = 0
x-4 = 0, x = 4
x+2 = 0, x = -2
So the following values of x will solve the equation:
x = 0
x = 4
x = -2
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How do you factorise x3 plus 2x2-8x plus 5 equals 0?
x3 + 2x2 - 8x + 5 = 0 x(2x - 8) + 5 = 0
What is the factorization of x3 plus 2x2 35x?
x3 + 2x2 - 35x = x(x + 7)(x - 5)
Who can solve 2x2 equals 8x?
2x2 = 8x x = 8x/2x x = 4 Check: 2(4)2 = 8(4) 2(16) = 32 32 = 32
How do you solve 2xsquared minus 8x plus 3 equals 0?
2x2 - 8x + 3 = 0 needs to be solved using the quadratic formula.x = (4 + sqrt(10))/2 or x = (4 - sqrt(10))/2
Find the factors of x3-5x2 8x-4 how to solve this equation?
5x2-8x-4
How do you factorise x3 plus 2x2-8x plus 5 equals 0?
x3 + 2x2 - 8x + 5 = 0 x(2x - 8) + 5 = 0
Describe how the Factor Theorem can be used to determine whether x plus 1 is a factor of x3-2x2-8x-5?
The factor theorem states that for any polynomial function f(x), if f(a) = 0, then (x-a) is a factor of f(x). Let f(x) = x3-2x2-8x-5. If (x+1) is a factor, then f(-1) = 0. (x+1 = x - (-1)) Input x = -1 into f: (-1)3-2(-1)2-8(-1)-5 f(-1) = -1 -2 + 8 - 5 f(-1) = 0. Since f(-1) = 0, (x+1) is a factor of x3-2x2-8x-5. Q.E.D.
Solve X3 plus X2-8X-6 equals 0?
x3 + x2 - 8x - 6 = 0 x3 + 3x2 - 2x2 - 6x - 2x - 6 = 0 x2(x + 3) - 2x(x + 3) - 2(x + 3) = 0 (x + 3)(x2 - 2x - 2) = 0 The second bracket cannot be factorised, so applying the quadratic formula to it gives the answers as So x = -3 or x = 1 +/-sqrt(3) that is, x = -3, x = -0.732051 or x = 2.732051
What is the factorization of x3 plus 2x2 35x?
x3 + 2x2 - 35x = x(x + 7)(x - 5)
How do you factor x3 2x2 5x 4?
x3 + 2x2 + 5x + 4 = (x + 1)(x2 + x + 4)
Solve the inequality x3 2x2-3x0?
If that's + 2x2, the answer is x(x + 3)(x - 1) x = 0, -3, 1 If that's - 2x2, the answer is x(x - 3)(x + 1) x = 0, 3, -1
Factor the polynomial x3-2x2 plus x-2?
x3 - 2x2 + x - 2 =(x - 2)(x2 + 1)
What is a cubic polynomial in standard form with zeros -5 5 2?
x3 - 2x2 - 25x + 50 = 0
Who can solve 2x2 equals 8x?
2x2 = 8x x = 8x/2x x = 4 Check: 2(4)2 = 8(4) 2(16) = 32 32 = 32
How do you solve 2xsquared minus 8x plus 3 equals 0?
2x2 - 8x + 3 = 0 needs to be solved using the quadratic formula.x = (4 + sqrt(10))/2 or x = (4 - sqrt(10))/2
2x3 - 7 plus 5x2 - x3 plus 3x - x3?
2x3 - 7 + 5x - x3 + 3x - x3 = 8x - 7
Find the factors of x3-5x2 8x-4 how to solve this equation?
5x2-8x-4
