standard_description: Extend polynomial identities to the complex numbers. For example, rewrite x^(2) + 4 as (x + 2i)(x – 2i).
problem_activity: Evaluate the expressions.
a.
$$24\div(2+1)+(11-8)\times2$$
b.
$$3^2\times4-10+(12-3)^2$$
c.
$$(3\times4)^2-10\times(12-3^2)$$


aligns: no