In the expression 3x² - 15x, the common factor is:
3x.
3².
5.
5x.
Given that (x − 2) is a factor of f(x) = x² - kx + 4,
the value of k is
4.
0.
-4.
The graph of the function f(x) = 2x² - 3x - 2 has:
Both maximum and minimum turning points.
No turning point.
A maximum turning point.
A minimum turning point.
Given that y = -2 and x = 1, then the value of y² + x + 1 is:
6.
-2.
The expansion of (x - 3)(x + 4) is:
x² + x - 12.
x² − x − 12.
x² + x − 7.
x² + x + 1.
