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The factor tree of a number $x$ is shown below :
Find the values of $x, y, a$ and $b$. Hence, write the product of the prime factors of the number $x$ so obtained.
Find the values of $x, y, a$ and $b$. Hence, write the product of the prime factors of the number $x$ so obtained.
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$b = 7$
$a = 3$
$y = 420$
$x = 840$
$x = 840 = 2^3 \times 3 \times 5 \times 7$
$a = 3$
$y = 420$
$x = 840$
$x = 840 = 2^3 \times 3 \times 5 \times 7$