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**If**…** find the value of x**

**Now for the right answer to the above question:**

**Option A is incorrect.****Option B is correct.****C is incorrect.****D is not the correct answer.**

**KEY-POINTS…**

**You may please note the****se/this****:**

**Remember, the two vertical straight lines (not brackets) on both sides of any matrix signifies its determinant.****If you love our answers, you can login to comment and say hi to us at the comment section…**

**To raise new related question****s, c****lick the ASK A QUESTION BOTTON down this page…**

**/ culled from 2019 JAMB-UTME mathematics question 23 /**