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Year 8
Algebra
Year 8
Learn With an Example
Questions
1
/
8
Time
Score
00
Common Factors
Factor 21x^2+49x. Use positive common factors.
7x
2
y(12x
4
-2y)
7x y(12x-2y)
Factor 15x
3
y+180xy
2
-90xy. Use positive common factors.
15xy(x
2
+12y-6)
15xy(x+12y-6)
Factor 84x
6
y-14x
2
y
2
. Use positive common factors.
9xy(4x+14)
9xy(4x+15)
Factor 108x
4
-36x
2
. Use positive common factors.
12x
2
(9x
2
-3)
12x
2
(9x-3)
Expand: (5xy-13x)
3
125x
3
y
3
-975x
3
y
2
+2535x
3
y-2197x
3
125x
3
y
3
-975x
3
y
2
Factor 100x
8
y
8
-140x
6
y
7
-60x
5
y
8
. Use positive common factors.
20x
5
y
7
(5x
3
y-7x-3y)
20x
5
y
7
Factor 21x
2
+49x. Use positive common factors.
7x(3x+7)
7x(3x+6)
Expand: (-10xy+9z)
3
-1000x
3
y
3
+2700x
2
y
2
z-2430xyz
2
+729z
3
-1000x
3
y
3
+2700x
2
y
2
z-2430xyz
2
+729z
Incorrect
Great!
It is done.