What is sqrt(x-9)*sqrt(x+9) ?

The solution to sqrt(x-9)*sqrt(x+9) is sqrt((x-9)(x+9))

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simplify sqrt(x-9)*sqrt(x+9)

simplify

x - 9 \cdot x + 9

(x - 9) (x + 9)

Solution steps

x - 9 x + 9

Apply radical rule:

a b = a \cdot b,

assuming

a \geq 0, b \geq 0

x - 9 x + 9 = (x - 9) (x + 9)

= (x - 9) (x + 9)

\frac{1}{4} (4.83 \cdot 1 0^{- 6})

- 1.6021917 \cdot 1 0^{- 19}

7.9 \cdot 1 0^{- 3}

(N H^{4}) 2 S O^{4}

(a + 1)^{2} (a + 2)^{2}

What is sqrt(x-9)*sqrt(x+9) ?
The solution to sqrt(x-9)*sqrt(x+9) is sqrt((x-9)(x+9))