Unit 1BC Test Review ODD #s

Mathematical Equivalence

ON

Answer explanation

Find the GCF of the numerator, then find the GCF of the denominator.

On top, it should have been 2(x+3).

On the bottom, it should have been 4(x+3).

(x+3) cancels out (x+3), leaving us with 2/4 or 1/2.

Mathematical Equivalence

ON

Answer explanation

Find the GCF of the numerator:

4(x+1)

Factor the denominator:

(x+3)(x+1).

Cancel what you can.

Mathematical Equivalence

ON

Answer explanation

Find the GCF for both numerators:

9(x+2) and 3(x-4)

Factor the denominator on the left:

(x-4)(x+2)

Cancel what you can.

Mathematical Equivalence

ON

Answer explanation

Remember: Keep, Change, Flip!

Factor the left numerator:

(x+8)(x-3)

Factor the right numerator: (x-9)(x+1)

Find the GCF of the left denominator: 2(x+1)

Find the GCF of the right denominator: 3(x+8)

Cancel what you can.

Mathematical Equivalence

ON

Answer explanation

First, factor out a GCF:

2(x^4-5x^2-36)

Then factor the difference of perfect squares!

Mathematical Equivalence

ON

Answer explanation

Factor by grouping!

Answer explanation

The numerator factors to become

(x-9)(x+5)

The denominator factors to become

(x+6)(x+5)

Cancel what you can.

• TRUE

• FALSE

• TRUE

• FALSE

Mathematical Equivalence

ON