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Maths (Higher)
Surds
Starter quiz
Try it
Give to class
Write
7(2\sqrt {5} + 3\sqrt {3})
in the form
x\sqrt {5} + y\sqrt {3}
. What is the value of
x
?
'14' ✓
Write
7(2\sqrt {5} + 3\sqrt {3})
in the form
x\sqrt {5} + y\sqrt {3}
. What is the value of
y
?
'21' ✓
Write
5\sqrt {3}(2\sqrt {8} + 3\sqrt {2})-\sqrt {3}(\sqrt {8} + 2\sqrt {2})
in the form
a\sqrt {b}
. What is the value of
b
?
'6' ✓
Write
5\sqrt {3}(2\sqrt {8} + 3\sqrt {2})-\sqrt {3}(\sqrt {8} + 2\sqrt {2})
in the form
a\sqrt {b}
. What is the value of
a
?
'31' ✓
Write
\sqrt {5}(3\sqrt {5} + 2)-(3\sqrt {5} + 2)
in the form
a-\sqrt {b}
. What is the value of
b
?
'5' ✓
Write
\sqrt {5}(3\sqrt {5} + 2)-(3\sqrt {5} + 2)
in the form
a-\sqrt {b}
. What is the value of
a
?
'13' ✓
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