\(\displaystyle \\-x^3+5x^2-7x\\-x(x^2-5x+7)\\-x\left( {x - \left[ {\dfrac{{5 + \sqrt 3 i}}{2}} \right]} \right)\left( {x - \left[ {\dfrac{{5 - \sqrt 3 i}}{2}} \right]} \right)\).PLS HELP!!! I cant factorise -x^3+5x^2-7x
The fundamental theorem of algebra says: any polynomial with real coefficients and of degree n, where n is even, can be factored into n/2 quadratic terms with real coefficients and any polynomial with real coefficients and of degree n, where n is odd, can be factored into (n - 1)/2 quadratic terms with real coefficients plus 1 linear term with real coefficients.PLS HELP!!! I cant factorise -x^3+5x^2-7x
PLS HELP!!! I cant factorise -x^3+5x^2-7x
-x(x^2 - 5x + 7)
use the quadratic formula for the quadratic equation
thanks QuaidBe careful reading, Marvin. There is no equation to solve, in this exercise. (All equations contain an equals sign.)The request asks only for a factorization, not value(s) of x, so the quadratic formula is not required.Cheers :cool: