Question

If the product of 2 and square of a number is subtracted to 4 times, the sum is 6. Find the number.

Answer 1

Answer:

Begin solving this equation by isolating n on the left side by adding 25 to both sides and then simplify as follows:

4n - 25 + 25 = 59 + 25

4n + 0 = 84

4n = 84

Now, divide both sides by 4 and then simplify as follows:

(4n)/4 = 84/4

(4/4)n = 21

(1)n = 21

n = 21

CHECK:

4n - 25 = 59

4(21) - 25 = 59

84 - 25 = 59

59 = 59

Therefore, n = 21 is indeed the solution and the desired number.

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