Math, asked by ishapinjara, 7 months ago

Solve up to 2 decimal places: 3x² – x – 7 = 0.

Answers

Answered by pinjaraarifisha

Answer:

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__________

x = 1.70 or -1.36

Step-by-step explanation:

According to the question the given quadratic equation is: "3x² – x – 7 = 0.

Now, we have to use Sridhar Acharya formula:

x = [−b±√(b²−4ac)]/2a

Here a = +3, b = -1 and c = -7.

So, x = [−(-1)±√((-1)²−4*(3)*(-7))]/2*a

or, x = [+1±√(1+84)]/2*3

or, x = [+1±√85]/6

or, x = [+1+√85]/6 or [+1-√85]/6

or, x = [+1+9.21]/6 or [+1-9.21]/6

or, x = 10.21/6 or -8.21/6

or, x = 1.70 or -1.36 [Ans]

Therefore, correct upto 2 decimal places the value of x will be either 1.70 or -1.36.

Thanks Dude!

have A Nice Day (^_^)

__________

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Answered by rvkinage

Step-by-step explanation:

According to the question the given quadratic equation is: "3x² – x – 7 = 0. Here a = +3, b = -1 and c = -7. Therefore, correct upto 2 decimal places the value of x will be either 1.70 or -1.36.

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Solve up to 2 decimal places: 3x² – x – 7 = 0.​

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Solve up to 2 decimal places: 3x² – x – 7 = 0.