Topic Content:
- Coefficient of Terms
Recall that a quadratic expression has 2 as its highest power.
A quadratic expression is also known as a polynomial of the second degree.
The general form of a quadratic expression is
\( \scriptsize ax^2 + bx + c \)Where (a ≠ 0)
a is not equal to zero.
where a, b and c represent any number
a is called the coefficient of x2
b is called the coefficient of x
c is a constant term.
Worked Example 6.2.1:
Write down the coefficient of x2, x, and the constant in the following expressions.
a. x2 + 3x + 1
b. 2x2 – 8
c. 7x2 – x – 2
d. 4x2 – 6x + 4
e. (x – 1)(x – 2)
Solution
a. x2 + 3x + 1
⇒ \( \scriptsize ax^2 + bx + c \) compare coefficients
a = 1, b = 3, c = 1
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