MCQ
निम्नलिखित में से कौन द्विघात समीकरण है?
- A$x^2+4 \sqrt{x}+4=0$
- B$\left(x^2+\sqrt{x}\right)(x+\sqrt{x})=5$
- ✓$(x+1)^2+x^2=0$
- D$(x+1)^3=11$
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