If 12 is subtracted form 3 times the square of a possitive number the result is 5 times the number find the number
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Answer:
Number = 3
Step-by-step explanation:
Let the number be x
3x² - 12 = 5x
⇒ 3x² - 5x - 12 = 0
⇒ 3x² - 9x + 4x -12 = 0
⇒ 3x( x - 3) + 4(x - 3) = 0
⇒ (3x + 4)(x - 3)
x = 3 , -4/3
Since, -4/3 is not applicable.
Number = 3
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