GCF LCM Exponents Simplify Expressions and Like Terms

If x divides y exactly, what is the HCF of x and y?

• 1

• x

• y

• xy

If x divides y exactly, what is the LCM of x and y?

• 1

• x

• y

• xy

If the factors of x and y are different to each other, what is the HCF between x and y?

• 1

• x

• y

• xy

if factors of x and y are different from each other, what is the LCM between the x and y?

• 1

• x

• y

• xy

Two expressions are p(x) and q(x). If their HCF is f(x) and LCM is g(x), write the relation between p(x), q(x), f(x) and g(x).

• p(x).+ q(x)=f(x) + g(x)

• p(x) - q(x) = f(x) - g(x)

• p(x)q(x) = f(x)g(x)

• p(x)f(x) = q(x)g(x)

In what condition p/q is called the rational number?

• p and q are integers and q is zero integer

• p and q are integers

What must be the index of 2 so that it gives the value 1/2?

• 0

• -1

• 1

• 2

• a=-1 and b = 1

• a = 0 and b = 0

• a = 0 or b = 0

• a - 2 and b = 4

• 2

• -2

• 3

• -3