What is the simplest form of 5x2-3x4-9-

The correct option is C 5x^2 3 Given, 5(x^2+3)x^4 9 We know, x^4 9 = (x^2+3)(x^2 3) = 5(x^2+3)x^4 9=5(x^2+3)(x^2 3)(x^2+3) = ...

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Rational Expression

What is the s...

Question

What is the simplest form of $\frac{5 (x^{2} + 3)}{(x^{4} - 9}$ ?

\frac{5 (x + 3)}{x^{2} - 3}

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\frac{5}{x^{2} + 3}

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\frac{5}{x^{2} - 3}

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\frac{5}{x - 3}

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Find and correct the errors in the following mathematical statement. Substituting x = −3 in

(a) x² + 5x + 4 gives (−3)² + 5 (−3) + 4 = 9 + 2 + 4 = 15

(b) x² − 5x + 4 gives (−3)² − 5 (−3) + 4 = 9 − 15 + 4 = −2

x = - 3

x^{2} + 5 x + 4

(- 3)^{2} + 5 (- 3) + 4 = 9 + 2 + 4 = 15

x^{2} - 5 x + 4

(- 3)^{2} - 5 (- 3) + 4 = 9 - 15 + 4 = - 2

x^{2} + 5 x

(- 3)^{2} + 5 (- 3) = - 9 - 15 = - 24

$l i m x \to \infty \frac{\sqrt{x^{2} + 1} - \sqrt[3]{x^{2} + 1}}{\sqrt[4]{x^{4} + 1} - \sqrt[5]{x^{4} - 1}} i s e q u a l t o$

(\frac{x - 3}{x^{2} - x - 6} + \frac{2 x - 1}{2 x^{2} + 5 x - 3} - \frac{2 x + 5}{x^{2} + 5 x + 6})

Substituting $x = - 3$ in $x^{2} + 5 x$ gives $3^{2} + 5 (- 3) = - 9 - 15 = - 24.$

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