In the expression 3x² - 15x, the common factor is:
5x.
5.
3x.
3².
The number of factors in the expression (x + 1)(x + 2) is:
3.
1.
2.
4.
Given that (x − 2) is a factor of f(x) = x² - kx + 4,
the value of k is
0.
-4.
The remainder when x² - 2x + 7 is divided by (x + 4) is:
31
15
-17
-1
The expression x2 - (2x - 3)(2x + 3) when expanded and simplified gives:
3(3 + x²).
3(3 - x²).
-3(3 + x²).
(3 + x)(3 - x).
