If A= x R: x^2+6 x-7 0 and B= x R: x^2+9 x+14 0 , then which of the following is/are correct? 1. A B= X R:-2 x 1 2. A B= x R:-7 x -2 Select the correct answer using the code given below:

Question

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Correct answer: C. Both 1 and 2

We have : array lll x^2+6 x-7 0 & & & x^2+9 x+14 0 (x-1)(x+7) 0 & & & (x+2)(x+7) 0 x (-7,1) & & & x (- ,-7) (-2, ) array A B= x R:-2 x 1 It is true. A B=A-B= x R:-7 x -2 It is also true.

If A= x R: x^2+6 x-7 0 and B= x R: x^2+9 x+14 0 , then which of the following is/are correct? 1. A B= X R:-2 x 1 2. A B= x R:-7 x -2 Select the correct answer using the code given below:

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