What is the answer to l=5x+(720)/x ?

The answer to l=5x+(720)/x is x=(l+sqrt(l^2-14400))/(10),x=(l-sqrt(l^2-14400))/(10)

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l=5x+(720)/x

l = 5 x + \frac{720}{x}

x = \frac{l + l ^{2} - 14400}{10}, x = \frac{l - l ^{2} - 14400}{10}

Solution steps

l = 5 x + \frac{720}{x}

Multiply both sides by

x

l x = 5 x^{2} + 720

Solve

l x = 5 x^{2} + 720 : x = \frac{l + l ^{2} - 14400}{10}, x = \frac{l - l ^{2} - 14400}{10}

x = \frac{l + l ^{2} - 14400}{10}, x = \frac{l - l ^{2} - 14400}{10}

0 = \frac{10 + 6 t - 0.2 t ^{2}}{t}

x, \frac{y}{x} = - 4

\frac{1}{x + 2} = x + 1

\frac{4 x - 5}{x + 5} = \frac{4}{2}

t, a = \frac{S ^{2}}{2 t}

What is the answer to l=5x+(720)/x ?
The answer to l=5x+(720)/x is x=(l+sqrt(l^2-14400))/(10),x=(l-sqrt(l^2-14400))/(10)