Problema Solution
Andrea has x pencils. Harish has four less than 9 times the square of the amount Andrea has. Determine the expression that represents the amount of pencils that Harish has and write it in factored form.
Answer provided by our tutors
The expression that represents the amount of pencils that Harish has is:
9*(x^2) - 4 = (3x)^2 - 2^2 = (3x + 2)(3x - 2)