Pick the letter of the correct answer. Don't forget your calculations.
*no.1 is in the picture above⬆️.

2. Which of the following is NOT a rational algebraic expression?
a.√43
b.√49x²
c.am²/w
d.abx³

3. Which key concept should be remembered in subtracting rational algebraic expressions?
A. Change the sugn of the terms in the numerator of the subtrahend.
B.Change the sign of the terms in the denominator of the subtrahend.
C.Change the sign of the terms in the numerator of the minuend.
D. Change the sign of the terms of the denominator of the minuend.

4.Simplify (n²m^-3x)^0
A. n²m³x
B.1
C.0
D.nx/m³

5.Identify the factors of 18sa+6sr+24ta+8tr.
A.(3a+r)(6s+8t)
B.(a+3r)(8s+6t)
C.(3s+t)(6a+8r)
D.(3t+s)(6r+8a)

6.Which of the following gives a product of x²+5x+4?
A.(x+1)(x+4)
B. (x+2)(x+2)
C. (x+5)(x-1)
D.(x+2)(x+4)

7. To what expression (de²f)^0 is equal to 1. What is the explanation for this?
A.An expression raised to the exponent of zero is equal to itself.
B. An expression raised to the exponent zero is equal to one.
C. An expression raised to the exponent one is equal to itself.
D.An expression raised to the exponent one is equal to one.

8.To what expression is 14x^0 equal to?
a.1
b.0
c.14
d.14x

9. Which of the following mathematical expressions can be factored by grouping?
A.x²+2x+1
B. 6a²b-3ab²
C. 8p^6-27r^9
D.4wt+2wh+6it+3ih

10. The following statements are steps on factoring common or general trinomials. Regroup the statement to it's correct order.
I. identify which factor pair sums up to the numerical coeffecient of the middle term.
II. write each factors in the pairs as the last term of the binomial factors
III. factor the first term of the trinomial and write these as the first term of the binomial factors.
IV. list down all the factors of the last term.

11. Which of the following are not factors of 24?
A. 2 and 4
B. 3 and 8
C. 4 and 6
D. 24 and 1​