Question

factorise and find value of x
$2 {x}^{2} - x - 1 = 0$
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Answer 1

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$\red{\bold{\underline{\underline{QUESTION:-}}}}$

Q:-factorise and find value of x

$2 {x}^{2} - x - 1 = 0$

$\huge\tt\underline\blue{ANSWER }$☟☟☟

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$➾</p><p>2 {x}^{2} - x - 1 = 0$

$➾</p><p>2 {x}^{2} - 2x + x - 1 = 0$

$➾</p><p>2x(x - 1) + 1(x - 1) = 0$

$➾</p><p>(2x + 1)(x - 1) = 0$

$➾</p><p>2x + 1 = 0$

$➾</p><p>x = - \frac{1}{2}$✓

$➾</p><p>x - 1 = 0$

$➾</p><p>x = 1$✓

HOPE IT HELPS YOU..

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