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Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is:

Option 1)
$4$
Option 2)
$5$
Option 3)
$6$
Option 4)
7
Option 5)
$10$

Answers (1)

R rishi.raj

$3x^{2}-4x=50+x$

$By\: solving \: this\: x=5$

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