What is expand 9/(sqrt(1-x^2)) ?

The solution to expand 9/(sqrt(1-x^2)) is (9sqrt(1-x^2))/(1-x^2)

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expand 9/(sqrt(1-x^2))

expand

\frac{9}{1 - x ^{2}}

\frac{9 1 - x ^{2}}{1 - x ^{2}}

Solution steps

\frac{9}{1 - x ^{2}}

Multiply by the conjugate

\frac{1 - x ^{2}}{1 - x ^{2}}

= \frac{9 1 - x ^{2}}{1 - x ^{2} 1 - x ^{2}}

1 - x^{2} 1 - x^{2} = 1 - x^{2}

= \frac{9 1 - x ^{2}}{1 - x ^{2}}

- 4 cos (0.5 (x + 90)) - 60

4 (\frac{3}{2} - 2 u)

(t + Δ t)^{4}

A (1, - 4) y B (8, - 6)

\frac{2}{9} (3 t + 3)

What is expand 9/(sqrt(1-x^2)) ?
The solution to expand 9/(sqrt(1-x^2)) is (9sqrt(1-x^2))/(1-x^2)