KCET 2018 Math Solved Paper

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Question : 8 of 60

Marks: +1, -0

If|

−

a

×

−

b

|2 + |

−

a

·

−

b

|2 = 144 and |

−

a

| = 4, then the value of |

−

b

| is

1
2
3
4

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