91Ó°ÊÓ

In the following exercises, find the least common multiple of each pair of numbers using the prime factors method.

12, 16

Find the prime factorization of 60.

Simplify:

(a) $18(−4)÷{(−2)}^3$

(b) $−32÷4+(−2)(−7)$

Give an example from your life experience of adding two negative numbers.

Evaluate: $3x^2−2xy+6y^2$ when $x=1,y=−2$.

In your own words, state the rules for multiplying and dividing integers.

Evaluate:$4x^2-xy+5y^2$when$x=-2,y=3$.

Why$-4^3={\left(-4\right)}^3$?

Translate and simplify the sum of 9 and$-16$, increased by 4.

In the following exercises, simplify.

$-\frac{108}{63}$