MCQ
यदि $f(x)=\left(x^2-1\right)$ और $g(x)=(2 x+3)$ तो $(g o f)(x)=?$
- ✓$\left(2 x^2+1\right)$
- B$\left(2 x^2+3\right)$
- C$\left(3 x^2+2\right)$
- Dइनमें से कोई नहीं
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