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Factor completely. 5x2-2x - 7​

User FizzBuzz
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1 Answer

5 votes

Explanation:


\tt{5 {x}^(2) - 2x - 7}

Find the two numbers that multiply to get 35 and subtract to get 2. The two numbers should be 5 & 7.


\tt{5 {x}^(2) - (7 - 5)x - 7}

Distribute x through the parentheses


\tt{5 {x}^(2) - 7x + 5x - 7}


\tt{ \underbrace{5 {x}^(2) - 7x } \: + \underbrace{5x - 7}}


\tt{x(5x - 7) + 1(5x - 7)}


\tt{(x + 1)(5x - 7)}


\pink{ \boxed{ \boxed{ \tt{Our \: final \: answer : \boxed{ \tt{(x + 1)(5x - 7)}}}}}}

Hope I helped ! ♡

Have a wonderful day / night ! ツ

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User Siavash Alp
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