Quantities and Expressions
Which radical is the simplest form square root of 48?
4/3
3+x=6
x=3
subtract 6-3 and its leaves you with 3
4xy-2y+9xy2+6xy
10xy-2y+9xy2
leave everything the same and add liked terms
-3x + (-2) = -17
x=5
-2+2
-17+2
-15
-3x
6=-4+z
z=10
-4-6
-10
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Mark is typing up the final copy of his essay for
class. He can type 20 words per minute. If his
final essay is 5356 words in length, how long did
it take Mark to finish typing his essay? Round to
the nearest minute.
4 hours and 28 minutes
11=2+n
n=9
move the variable
2-11
is 9
change sign
(2x2+3x-5) + (-x2+7x+2)
x2+10x-3
collect like terms
2x+15=-3x
-3
15-15
collect like terms
divide by 5
-9=s/6
s=-54
divide both side by 6
Simplify (7x - 4)2
49x2-56x+16
Expand the expression.
raise (7x)2 then raise each factor to that power.
t/9=1-12
t=-99
12-1
multiply each side by 9
4x (2x2+3x-5)
8x3+12x2-20x
multiply by 4
n/2 +5=3
n=-4
multiply by 2
move 10
subtract 6 and 10
10=2+a
a=8
move a
2-10
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What is the result of subtracting 4x2 +3xy+2y2 from 5x2+3xy+6y2
-x2-4y2
2x-5<1
x<3
move the 5 to right
add 5 and 1
divide by 2
(2x+3) x (x-5)
2x2-7x-15
multiply everything
collect like terms
3p-2=-29
p=-9
move -2
-29+2
-27 divide by three
-12=f-7
f=-5
move f
-7+12
5
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Sally paid $2.40 for 4 ounces of cinnamon. If
there are 16 ounces in 1 pound, how much does
cinnamon cost per pound?
$9.6
3y-3>12
y>15
move 3 to the right
add 12 and 3
divide by 5
(2x2+3x-5) - (-x2+7x+2)
3x2-4x-7
collect the likes terms
-5+x
______=-1
22
x=-17
4c=-40
c=-10
divide by 4