Write 4.123 in expanded form

Okay. So when it comes to expanded form, we are talking about expanding it by place value and making it in the form of addition. The 4 in that number is just 4, the 1 is 0.1, the 2 is 0.02, and the 3 is 0.003. Those are the values. The number in expanded form is 4 + 0.1 + 0.02 + 0.003.

In expanded form, you will need to write out the ones place, tenths place, hundredths place, and thousandths place.
The answer is 4 + 0.1 + 0.02 + 0.003.

(x - 4)(x - 12)

Step-by-step explanation:

Note that 4(12) = 48 and that 4 + 12 = 16.  Thus, we can surmise that

x² - 16x + 48 = (x - 4)(x - 12).