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MATH / For how many positive integer values of x is the sum x²+4x+4 less than 20?

Problem

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problem

For how many positive integer values of xx is the sum x2+4x+4x^2+4x+4 less than 20?
Plain-text mathematical notation (without MathML)
For how many positive integer values of x is the sum x²+4x+4 less than 20?
Original LaTeX notation
For how many positive integer values of $x$ is the sum $x^2+4x+4$ less than 20?

level

Level 3

type

Algebra

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