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Maths (Higher)
Surds
Starter quiz
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Three of the surds are like surds. Which one is not?
\sqrt {48}
2\sqrt {27}
2\sqrt {12}
2\sqrt {18}
✓
Three of the surds are like surds. Which one is not?
-5\sqrt {80}
-5\sqrt {30}
✓
a\sqrt {20}
b\sqrt {45}
10\sqrt {3} + a\sqrt {3} = -3\sqrt {3}
. What is the value of
a
?
'-13' ✓
Simplify the expression
\sqrt {12} + \sqrt {3} - \sqrt {27}
3\sqrt {3} - \sqrt {27}
-4\sqrt {3}
6\sqrt {3}
0 ✓
True or false?
\sqrt {20}
and
\sqrt {45}
are like terms.
True
False ✓
Simplify the expression
2\sqrt {15} + 3\sqrt {20} - 7\sqrt {80}
2\sqrt {15} - 100\sqrt {5}
2\sqrt {15} - 22\sqrt {5}
✓
2\sqrt {15} - 4\sqrt {5}
2\sqrt {15} - 2\sqrt {5}
+