Question

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​

Answer 1

Answer:

The correct answer is option B)$-1$

Step-by-step explanation:

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

Solving the equation-

$\[x=2,-3\]$

Now,  

$& -\text{ }\left| a+b \right|=-\left| 2-3 \right| \\ & =-1$

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