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The square of a number is 12 less than 7 times the number. What is the number?-4 or-3-4 or 3-3 or 4 3 or 4

Solution

The square of a number is 12 less than 7 times the number. What is the number? -4 or -3 -4 or 3 -3 or 4 3 or 4

Solution

The number : 4 or 3

Solution steps

Represent the number with

x

A.T.Q.:

x^{2} = 7 x - 12

Solve for

x, x^{2} = 7 x - 12 : x = 4, x = 3

The number : 4 or 3

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