Question

If 9x times 3x+1= 2187 what is the value of x?

Answer 1

Step-by-step explanation:

27×^2+9×=2187

27^2+9×-2,187=0

I hope this will help you....

Answer 2

Concept:

Quadratic equations are second-degree algebraic expressions. The most easy way for calculating the roots of a quadratic equation is to use the Quadratic Formula. Because certain quadratic equations are difficult to factor, we may use this quadratic formula to rapidly discover the roots.

Find:

The value of x.

Solution:

$9x(3x+1)=2187\\27x^2+9x=2187\\27x^2+9x-2187=0\\x=-9.16, 8.83$

Hence, the value of x is $-9.16, 8.83$.

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