Solve the equation 9x^2 + 8x – 5 = 3x^2to the nearest tenth.

9514 1404 393

  x ≈ {-1.8, 0.5}

Step-by-step explanation:

I find a graphing calculator to be about the easiest way to solve these. It is convenient to put the equation into the form f(x) = 0. Here we can do that by subtracting 3x^2 from both sides.

  9x^2 +8x -5 = 3x^2 . . . . . given

  6x^2 +8x -5 = 0 . . . . . . . . subtract 3x^2

The solutions to this are the x-intercepts of the graph:

  x = -1.8  or  +0.5

when studying polynomials, you often hear the terms zeros, roots, factors and x x the multiplicity of a zero is important because it tells us how the graph of the let's look at the graph of a function that has the same zeros

step-by-step explanation:

c-   36

taxicab circle radius 9 has 4(9) = 36 points