Question

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Помогите срочно
4x^3-x^2=0
И 2
(X^2-5)^2--3(x^2-5)-4=0

Answer 1

$1) 4 x^{3} - x^{2} =0 x^{2} (4 x-1)=0 x=0 x= frac{1}{4} 2)(x^{2} -5) ^{2} - 3 ( x^{2} - 5) -4 =0 x^{4} - 10 x^{2} + 25 - 3 x^{2} + 15 -4 =0 x^{4} -13 x^{2} + 36 =0 x^{2} = t t^{2} - 13 t+36=0 t_{1} =9 t_{2} =4 x^{2} =9 x^{2} =4 x_{1} = frac{+}{-} 3 x_{2} = frac{+}{-} 2$