100 ! will mark

1. what are the solutions to the equation 4b^2−45=−9

enter your answer with no spaces like the example provided here: x=2,-1

2. what are the zeros of the function represented by the quadratic expression
2x^2+x−3

3. simplify

−245−−√+33√+23√

4. 28√⋅20−−√

which of these is equivalent to this expression?

a. 3210−−√

b. 5

c. 810−−√

d. 228−−√

5. which product is irrational?

a. 2√⋅50−−√

b.10−−√⋅8√

c. 9√⋅49−−√

d. 64−−√⋅4√