Question

1. evaluate: $(-12)(+10) + (-8)(-9)$

Explanation:

Step1: Multiply the first two numbers

We know that the product of a negative number and a positive number is negative. So, $(-12)(+10)= - 12\times10=-120$

Step2: Multiply the next two numbers

The product of two negative numbers is positive. So, $(-8)(-9) = 8\times9 = 72$

Step3: Add the two results

Now we add the results from step 1 and step 2: $-120+72=-48$

Answer:

-48