Algebra 1
posted by Tris
1) what is the simplified form of (x2)(2x+3)? Use the distributive property.
A) 2x^2x6
B) 2x^26
C)2x^27x6
D) 2x^2 +x6****
2) what is the simplified form of (3x+2)(4x3) use a table.
A)12x^2+18x+6
B) 12x^2+x6
C) 12x^2+18x6****
D)12x^2x6
3) what is the simplified form of (4p2)(p4)
A)4p^2+6p16
B)4p^218p+8
C)4p^214p6
D)4p^26p+16****
4) the radius of a cylinder is 3x2 cm. the height of a cylinder is x+3 cm. what is the surface area of the cylinder? Use the formula A=2pi r^2+2pi rh
A) 2pi(3x^2+10x8)
B) 2pi(12x^2+7x2)
C) 2pi(12x^22x+13)
D) 2pi(12x^25x2)
Pi=the pi symbol I didn't know how to do that
5) what is the simplified form of (2x^2+4x3)(3x+1)
A) 6x^3+10x^25x+5
B) 6x^3+14x+5x3
C) 6x^3+14x^25x3
D) 6x^310x^25x3

Tris
@mssue

Reiny
#1, your middle term is x , thus A
#2 D
#3 B
How are you doing these, so far they are all wrong
(4p2)(p4)
= 4p^2  16p  2p + 8
= 4p^2  18p + 8
#4
A = 2πr^2 + 2πrh
= 2π(3x2)^2 + 2π(3x2)(x+3)
= 2π[ 9x^2  6x  6x + 4 + 3x^2 + 9x  2x  6]
= 2π[12x^2  5x  2] ,
which is D
#5
(2x^2+4x3)(3x+1)
= 6x^3 + 2x^2 + 12x^2 + 4x  9x  3
= 6x^3 + 14x^2  5x  3
I think you will need more practise with these. 
Tris
Thank you so much, and I know I have been practicing then I jut for some reason don't undertsand

Meh
A
D
B
D
C 
the pretty princess
@Meh is correct

seb
4.2(22x)=3x
a.4
b.4
c.6**
d.0
is that right?? 
Ur butt
meh is 100% correct thanks

MehIsCorrect
MehIsCorrect

me
A
D
B
D
C
D 
anon
me is all right

personification personified
me, is correct.
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