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Let x = a and x = b be the solutions to the equation below. What is the value of - |a+b|?
(7x-14)(3x+9) = 0

A) 1
B) -1
C) 5
D) -5​

Sagot :

Answer:

The correct answer is option B)[tex]-1[/tex]

Step-by-step explanation:

  [tex]& \left( 7x-14 \right)\left( 3x+9 \right)=0 \\ & 21{{x}^{2}}+63x-42x-126=0 \\ & 21{{x}^{2}}+21x-126=0 \\ & \\[/tex]  

Solving the equation-

[tex]\[x=2,-3\][/tex]

Now,  

[tex]& -\text{ }\left| a+b \right|=-\left| 2-3 \right| \\ & =-1 \\[/tex]

Learn more:

https://brainly.com/question/1863222?referrer=searchResults

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