MathematicsIf 3a+4 and 510 are similar surds, then a=

If $3 \sqrt{a + 4}$ and $5 \sqrt{10}$ are similar surds, then $a =$

A
3
B
5
C
6
D
7

Solution:

3 \sqrt{a + 4}

and

5 \sqrt{10}

are similar surds then

$a + 4 = 10$

$a = 6$

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