Question

3x²-1 , x =-1/✓3 find zero​

Answer 1

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★ Given polynomial

$\longmapsto \sf {3x}^{2} - 1$

★ Value of x

$\longmapsto \sf x = - \frac{1}{ \sqrt{3}}$

★ Zero of the polynomial

$\longmapsto \sf3 \times \bigg( - \frac{1}{ \sqrt{3}} { \bigg)}^{2} - 1$

$\longmapsto \sf3 \times \frac{1}{3} - 1$

$\longmapsto \sf1 - 1$

$\longmapsto \sf0$

Answer 2

Step-by-step explanation:

$3x { }^{2} - 1 \\( x = - 1 \div 3) \\ = 3( - 1 \div 3) { }^{2} - 1\\ = 3( - 1 \div 3 \times - 1 \div 3) - 1\\ = 3(0.111) - 1 \\ = 0.3333 - 1 \\ = 0$