Math, asked by piyushsaxena2006, 7 months ago

factorise 81-42x²
please help me

Answers

Answered by reetidoshi

2

Answer:

$81 - {42x}^{2} = 0 \\ { - 42x}^{2} = - 81 \\ {x}^{2} = \frac{ - 81}{ - 42 } \\ {x}^{2} = \frac{27}{14} \\$

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