Q. The roots of the equation x^2 - 7x + 10 = 0 are: (2019)
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A.
1 and 10
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B.
2 and 5
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C.
3 and 4
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D.
5 and 2
Solution
Factoring gives (x-2)(x-5)=0, hence the roots are 2 and 5.
Correct Answer: C — 3 and 4
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Q. What is the value of x in the equation 5x + 2 = 17? (2023)
Solution
5x + 2 = 17 => 5x = 15 => x = 3.
Correct Answer: B — 3
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Q. What is the value of y in the equation 9y - 5 = 22? (2023)
Solution
9y - 5 = 22 => 9y = 27 => y = 3.
Correct Answer: B — 3
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