Question

x^-55x+720=0 answer fast​ i rate all five

Answer 1

Answer: x = $\frac{3025+\sqrt{145} }{2}$   or x = $\frac{3025-\sqrt{145} }{2}$

Step-by-step explanation:

$x^{2} - 55x + 720 = 0$

Now according to the formula;

$x=$ $\frac{-b +- \sqrt{b^{2} -4ac} }{2a}$....(+- symbol refers to ± and * refers to multiplication)

now by comparing the given eq with standard eq.($a^{2}+ bx +c = 0$)

a = 1,

b = -55 and,

c = 720

Now by substituting the values,

$x = \frac{-(-55) +- \sqrt{(-55^{2} ) - 4*1*720} }{2*(-55)} \\x = \frac{3025 +- \sqrt{3025 - 2880} }{2} \\x =\frac{ 3025 +- \sqrt{145\\}}{2}$

Therefore, x = $\frac{3025+\sqrt{145} }{2}$     Or  x = $\frac{3025 - \sqrt{145} }{2}$

Thus above is the solution to the equation.

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