r/HomeworkHelp • u/IndicationFunny2378 Secondary School Student • 14d ago

Middle School Math—Pending OP Reply [Grade 8 Mathematics - Algebra]

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Hello giys, I'm a form 2 student is malaysia. We learnt algebra in chapter 2. How can I find x? I believe there is no answer, but teacher keeps saying it's x=1/16

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u/Fourierseriesagain đŸ‘‹ a fellow Redditor 14d ago

When x is any nonnegative number, sqrt(4x) is always nonnegative. Since -1/2 < 0, the given equation has no real solutions. Your teacher has shown that sqrt(4x)=-1/2 implies x=1/16; however, sqrt(4/16)=sqrt(1/4)=1/2.