Question

http://prntscr.com/l5i2b9

Answer 1

@Vocaloid

Answer 2

any ideas? the highest exponent is 3 and there's only 1 term

Answer 3

D

Answer 4

or C

Answer 5

close, binomial would be 2 terms (so ___ + ____) but it's only one term so monomial (C)

Answer 6

http://prntscr.com/l5i2ys

Answer 7

"no real solutions" so b^2 - 4ac must be negative, if you look at the equation a = 1 and b = 4 so try seeing what possible c value would make the discriminant negative

Answer 8

-5?

Answer 9

4^2 - 4(1)c < 0

16 - 4c < 0
16 < 4c
c > 4
which is the only choice that works for c?

Answer 10

20

Answer 11

good so 20 = your sol'n

Answer 12

http://prntscr.com/l5i4fg

Answer 13

so you apply the distributive property

A(B+C+D) = A*B + A*C + A*D
following the same logic
3x(x^2 + 2x -4) = ?

Answer 14

D

Answer 15

yeah that's what I got too good

Answer 16

http://prntscr.com/l5i4sq

Answer 17

ooh boy

anyway I don't really know how to explain this w/o giving it away but try applying the distributive property on x first to get x(6x-1) and then on 4 to get 4(6x-1)

Answer 18

add or subtract?

Answer 19

it's (x+4) so the +4 retains its sign making A the better option

Answer 20

http://prntscr.com/l5i6ei

Answer 21

the problem pretty much tells you that a = the cube root of 27x^3 = 3x
and b = cube root of 8 = 2

so try to figure out what (a+b)(a^2 - ab + b^2) would be based on that

Answer 22

A?

Answer 23

yeah that's what i got too, well done

Answer 24

http://prntscr.com/l5i7gp

Answer 25

which one has a coefficient higher than the existing coefficient 4?

Answer 26

B

Answer 27

awesome

Answer 28

http://prntscr.com/l5i7tt

Answer 29

any ideas? try to imagine what vertical line would cut the parabola in two equal halves

Answer 30

either c or d

Answer 31

leaning to D

Answer 32

http://prntscr.com/l5i8ce
http://prntscr.com/l5i8dp

Answer 33

any ideas? the vertex (the pointy part of the parabola) should be on (-2,-9) and it should cross the x-axis on -5 and 1

to save time it's one of the first two choices

Answer 34

B

Answer 35

good

Answer 36

http://prntscr.com/l5i9cz

Answer 37

x-coordinate of the vertex is -b/(2a)
so check your equation to see what the b and a values are, and plug 'em in

Answer 38

b is 6? or 4

Answer 39

ax^2 + bx + c

so yes, b will be 6 since it's attached to the x

Answer 40

-6/2(4)

Answer 41

i think

Answer 42

a is 3, since the 3 is what's attached to the x^2

Answer 43

so -6/(2*3) = -1 = your solution

Answer 44

last one: http://prntscr.com/l5ia7q

Answer 45

basically it's saying the length has to be 20 more than the width

so if s is the width and s + 20 is the length, what's the area?

Answer 46

B?

Answer 47

yes

Answer 48

okay thank you voca !