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(d)/(dx)((2x^(2)+x-3)/(2x+7))=

ddx(2x2+x32x+7)= \frac{d}{d x}\left(\frac{2 x^{2}+x-3}{2 x+7}\right)=

Full solution

Q. ddx(2x2+x32x+7)= \frac{d}{d x}\left(\frac{2 x^{2}+x-3}{2 x+7}\right)=
  1. Identify Function: Identify the function to differentiate. The function given is a quotient of two functions, which means we will use the quotient rule to find the derivative. The quotient rule states that the derivative of a function h(x)=f(x)g(x)h(x) = \frac{f(x)}{g(x)} is given by h(x)=g(x)f(x)f(x)g(x)(g(x))2h'(x) = \frac{g(x)f'(x) - f(x)g'(x)}{(g(x))^2}.
  2. Differentiate Numerator and Denominator: Differentiate the numerator and the denominator separately. The numerator is 2x2+x32x^2 + x - 3, and its derivative is 4x+14x + 1. The denominator is 2x+72x + 7, and its derivative is 22.
  3. Apply Quotient Rule: Apply the quotient rule. Using the derivatives from Step 22, we have:\newlineh(x)=(2x+7)(4x+1)(2x2+x3)(2)(2x+7)2h'(x) = \frac{(2x + 7)(4x + 1) - (2x^2 + x - 3)(2)}{(2x + 7)^2}.
  4. Expand Numerator: Expand the numerator of the derivative. We need to distribute the terms:\newline(2x+7)(4x+1)=8x2+2x+28x+7=8x2+30x+7(2x + 7)(4x + 1) = 8x^2 + 2x + 28x + 7 = 8x^2 + 30x + 7,\newline(2x2+x3)(2)=4x2+2x6(2x^2 + x - 3)(2) = 4x^2 + 2x - 6.\newlineNow subtract the second product from the first:\newline(8x2+30x+7)(4x2+2x6)=8x2+30x+74x22x+6=4x2+28x+13(8x^2 + 30x + 7) - (4x^2 + 2x - 6) = 8x^2 + 30x + 7 - 4x^2 - 2x + 6 = 4x^2 + 28x + 13.
  5. Write Simplified Derivative: Write the derivative in its simplified form. The derivative is: h(x)=4x2+28x+13(2x+7)2h'(x) = \frac{4x^2 + 28x + 13}{(2x + 7)^2}.
  6. Check Simplified Form: Check if the derivative is in the simplest form and if it answers the question prompt. The derivative is simplified, and it is the answer to the question prompt.

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