Question

Find the value of (5/7)3x2-6

Answer 1

Step-by-step explanation:

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MATHS

Find the positive root of

3x

2

+6

=9

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ANSWER

Consider,

3x

2

+6

=9

squaring on both sides

3x

2

+6=81

3x

2

=81−6

3x

2

=75

x

2

=

3

75

x

2

=25

x=

25

x=±5

But positive root:

x=5