EasyMathematicsHigh School (9–10)GeneralAlgebra › PolynomialsNumericalBoard Exam

Find the value of p(x) = 3x² - x + 4 at x = 0, x = 2 and x = -3.

Try it on paper first. A hint, the key idea and the worked solution are here when you need them.

Find the value of $p(x) = 3x^2 - x + 4$ at $x = 0$ , $x = 2$ and $x = -3$ .

Need a reminder? The key ideaShow

A polynomial in $x$ has only whole-number powers of $x$ . Its degree is the highest power, and the coefficients are the numbers in front of the powers. The value $p(a)$ is found by putting $x = a$ .

The worked solution

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Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.

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Find the value of p(x) = 3x² - x + 4 at x = 0, x = 2 and x = -3.

The worked solution

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