Replace each of the x values given to see if they give 0.

0=(2/3)³+(2/3)²-1
0=(8/27)+(4/9)-1
0≠-0.259

0=(1)³+(1)²-1
0≠1

Therefore, you can see that the solution would have to be between 2/3 and 1.

Hope I helped :)

7 0

3 years ago

Which expression is equivalent to<img src="https://tex.z-dn.net/?f=18x%5Csqrt%7B14x%5E8%7D%2F6%5Csqrt%7B7x%5E4" id="TexFormula1"

Pani-rosa [81]

The equivalent expression is $3x^4\sqrt{2}$ . Option B

<h3>How to determine the expression</h3>

Given the expression

= $\frac{18x\sqrt{14x^8} }{6\sqrt{7x^4} }$

Divide the multipliers, we have

= $\frac{3x\sqrt{14x^8} }{7x^4}$

Let factorize the numerator in square root

= $\frac{3x \sqrt{7x^4 * 2x^4} }{7x^4}$

Eliminate the like factor in both the numerator and denominator

= $3\sqrt{2x^4}$

Let's bring forth the 'x' factor, we have

= $3x^4\sqrt{2}$

Thus, the equivalent expression $3x^4\sqrt{2}$ . Option B

Learn more about algebraic expression here:

brainly.com/question/723406

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4 0

2 years ago