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Question
4x2 – 9 = 0 implies x is equal to ______.
Options
`3/2`
`9/4`
`-3/2`
`±3/2`
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Solution
4x2 – 9 = 0 implies x is equal to `underlinebb(±3/2)`.
Explanation:
Given 4x2 – 9 = 0
`\implies` 4x2 = 9
`\implies x^2 = 9/4`
`\implies x = ±sqrt(9/4)`
`\implies x = ±3/2`
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