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Key Quiz 7.3
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1
The positive square root of 121 is:
A)–11
B)11
C)12
D)14 641
2
Write 16 as a power of its positive square root.
A)4 x 4
B)82
C)42
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3
Factor fully: 16x2 - 49 .
A)(4x + 7)2
B)(4x - 7)2
C)(4x + 7)(4x - 7)
D)(8x - 7)(8x + 7)
4
Factor fully: 75m2 - 12n2
A)3 (25m2 - 4n2)
B)3 (5m - 2n)(5m + 2n)
C)3 (5m - 2n)2
D)Cannot be factored.
5
Find the dimensions of the rectangle shown, given that y = 3 m.
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A)33 m x 33 m
B)36 m x 36 m
C)36 m x 39 m
D)33 m x 39 m





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