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simplify x^2(x^2-1)-9(x^2-1)

الحلّ

simplify

x^{2} (x^{2} - 1) - 9 (x^{2} - 1)

الحلّ

x^{4} - 10 x^{2} + 9

خطوات الحلّ

x^{2} (x^{2} - 1) - 9 (x^{2} - 1)

x^{2} (x^{2} - 1)

وسّع:

x^{4} - x^{2}

= x^{4} - x^{2} - 9 (x^{2} - 1)

- 9 (x^{2} - 1)

وسّع:

- 9 x^{2} + 9

= x^{4} - x^{2} - 9 x^{2} + 9

- x^{2} - 9 x^{2} = - 10 x^{2} :

اجمع العناصر المتشابهة

= x^{4} - 10 x^{2} + 9

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