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[Solved] STA100 GDB 1 Fall 2020  


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STA100 General Mathematics and Biostatistics GDB 1 Solution & Discussion Fall 2020


Question Description

Dear Students,

 

Solve the Quadratic Equation

{x^2} - 18x + 45 = 0  by factorization method.

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admin
(@admin)
Admin
Joined: 2 years ago
Posts: 5387
Topic starter  

STA100 General Mathematics and Biostatistics GDB 1 Solution & Discussion Fall 2020


STA100 GDB Solution.

 

{x^2} - 18x + 45 = 0

{x^2} - 15x - 3x + 45 = 0

x\left( {x - 15} \right) - 3\left( {x - 15} \right) = 0

\left( {x - 15} \right)\left( {x - 3} \right) = 0

\begin{array}{l}
Now\\
x - 15 = 0\;\;\;\;\;\;\;,\;\;\;\;\;\;\;\;\;x - 3 = 0
\end{array}

\begin{array}{l}
\;\;\;\;\;\;x = 15\;\;\;\;\;\;,\;\;\;\;\;\;\;\;\;\;\;\;\;x = 3\\
\;\;\;\;\;\;\;\;\;\;\;\;Solution\;Set = \left\{ {15,3} \right\}
\end{array}

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