Question

Resolva a conta:

X²-9x+20=0

Answer 1

x2−9x+20=0x^{2}-9x+20=0

a=1a=\textcolor{#B14BA5}{1}

b=−9b=\textcolor{#D24040}{-9}

c=20c=\textcolor{#3172E0}{20}

x=−(−9)±(−9)2−4⋅1⋅202⋅1x=\frac{-(\textcolor{#D24040}{-9})\pm \sqrt{(\textcolor{#D24040}{-9})^{2}-4\cdot \textcolor{#B14BA5}{1}\cdot \textcolor{#3172E0}{20}}}{2\cdot \textcolor{#B14BA5}{1}}