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Let 
y=(4x^(2)+3x)/(2x-7).

(dy)/(dx)=

Let y=4x2+3x2x7 y=\frac{4 x^{2}+3 x}{2 x-7} .\newlinedydx= \frac{d y}{d x}=

Full solution

Q. Let y=4x2+3x2x7 y=\frac{4 x^{2}+3 x}{2 x-7} .\newlinedydx= \frac{d y}{d x}=
  1. Quotient Rule Explanation: To find the derivative of the function yy with respect to xx, we will use the quotient rule. The quotient rule states that if you have a function that is the quotient of two functions, u(x)v(x)\frac{u(x)}{v(x)}, then its derivative is given by v(x)u(x)u(x)v(x)(v(x))2\frac{v(x) \cdot u'(x) - u(x) \cdot v'(x)}{(v(x))^2}. Here, u(x)=4x2+3xu(x) = 4x^2 + 3x and v(x)=2x7v(x) = 2x - 7.
  2. Derivative of u(x)u(x): First, we need to find the derivative of u(x)u(x) with respect to xx. The derivative of u(x)=4x2+3xu(x) = 4x^2 + 3x is u(x)=8x+3u'(x) = 8x + 3, using the power rule which states that the derivative of xnx^n is nx(n1)n\cdot x^{(n-1)}.
  3. Derivative of v(x)v(x): Next, we need to find the derivative of v(x)v(x) with respect to xx. The derivative of v(x)=2x7v(x) = 2x - 7 is v(x)=2v'(x) = 2, since the derivative of a constant is 00 and the derivative of 2x2x is 22.
  4. Applying Quotient Rule: Now we apply the quotient rule. We have u(x)=8x+3u'(x) = 8x + 3 and v(x)=2v'(x) = 2, so we plug these into the quotient rule formula:\newline(dy/dx)=(2x7)(8x+3)(4x2+3x)2(2x7)2(dy/dx) = \frac{(2x - 7) \cdot (8x + 3) - (4x^2 + 3x) \cdot 2}{(2x - 7)^2}.
  5. Simplifying Numerator: We simplify the expression in the numerator:\newline(2x7)×(8x+3)=16x2+6x56x21(2x - 7) \times (8x + 3) = 16x^2 + 6x - 56x - 21,\newline(4x2+3x)×2=8x2+6x(4x^2 + 3x) \times 2 = 8x^2 + 6x.\newlineSo the numerator becomes:\newline16x2+6x56x21(8x2+6x)=16x2+6x56x218x26x16x^2 + 6x - 56x - 21 - (8x^2 + 6x) = 16x^2 + 6x - 56x - 21 - 8x^2 - 6x.
  6. Further Simplification: Simplify the terms in the numerator:\newline16x28x2+6x6x56x21=8x256x2116x^2 - 8x^2 + 6x - 6x - 56x - 21 = 8x^2 - 56x - 21.
  7. Further Simplification: Simplify the terms in the numerator:\newline16x28x2+6x6x56x21=8x256x2116x^2 - 8x^2 + 6x - 6x - 56x - 21 = 8x^2 - 56x - 21.Now we have the simplified form of the derivative:\newline(dy/dx)=8x256x21(2x7)2(dy/dx) = \frac{8x^2 - 56x - 21}{(2x - 7)^2}.

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