2 years ago

How to solve quadratic inequalities.

Mathematics

1 answer:

Digiron [165]2 years ago

6 0

Find all the zeros of the polynomial, and arrange the zeros in increasing order. ...

Plot those numbers on the number line as open or closed points based upon the original inequality symbol.

Choose a test value in each interval to see if the interval satisfies the inequality or not.

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Find the x intercept. (Using the equation is more accurate, but I included a graph for reference)

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For the X intercept you set y = 0 and solve for x

Y = $- \frac{8}{3}$ x + 9
0= $- \frac{8}{3}$ x + 9 subtract 9 from both sides
-9 = $-\frac{8}{3} x$ divide both sides by 3
-3 = -8x divide both sides by -8
$\frac{3}{8}$ = x

X-intercept = ( $\frac{3}{8}$ , 0)

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