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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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