ddx(x2+1)5=\dfrac{d}{dx}(x^2 + 1)^5 =dxd(x2+1)5=A10x(x2+1)410x(x^2 + 1)^410x(x2+1)4check_circleB5x(x2+1)45x(x^2+1)^45x(x2+1)4C5(2x)45(2x)^45(2x)4D5(x2+1)45(x^2 + 1)^45(x2+1)4ExplanationChain rule: 5(x2+1)4⋅2x=10x(x2+1)45(x^2+1)^4 \cdot 2x = 10x(x^2+1)^45(x2+1)4⋅2x=10x(x2+1)4.