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Find the areas of the regions enclosed by the following curves.

{:[y=x^(4)-9x^(2)+2" and "y=x^(2)-7],[A=◻" (Type an integer or a simpl) "]:}
(Type an integer or a simplified fraction.)

Find the areas of the regions enclosed by the following curves.\newliney=x49x2+2 and y=x27A= (Type an integer or a simpl)  \begin{array}{l} y=x^{4}-9 x^{2}+2 \text { and } y=x^{2}-7 \\ A=\square \text { (Type an integer or a simpl) } \end{array} \newline(Type an integer or a simplified fraction.)

Full solution

Q. Find the areas of the regions enclosed by the following curves.\newliney=x49x2+2 and y=x27A= (Type an integer or a simpl)  \begin{array}{l} y=x^{4}-9 x^{2}+2 \text { and } y=x^{2}-7 \\ A=\square \text { (Type an integer or a simpl) } \end{array} \newline(Type an integer or a simplified fraction.)
  1. Identify Intersection Points: Identify the points of intersection of the curves y=x49x2+2y = x^4 - 9x^2 + 2 and y=x27y = x^2 - 7 by setting them equal to each other.x49x2+2=x27x^4 - 9x^2 + 2 = x^2 - 7x410x2+9=0x^4 - 10x^2 + 9 = 0Let u=x2u = x^2, then u210u+9=0u^2 - 10u + 9 = 0(u9)(u1)=0(u - 9)(u - 1) = 0u=9u = 9 or u=1u = 1x2=9x^2 = 9 or y=x27y = x^2 - 700y=x27y = x^2 - 711
  2. Set Up Integral for Area: Set up the integral to find the area between the curves from x=3x = -3 to x=1x = -1 and from x=1x = 1 to x=3x = 3.
    Area = 31[(x27)(x49x2+2)]dx+13[(x27)(x49x2+2)]dx\int_{-3}^{-1} [(x^2 - 7) - (x^4 - 9x^2 + 2)] \, dx + \int_{1}^{3} [(x^2 - 7) - (x^4 - 9x^2 + 2)] \, dx
    = 31[x4+10x29]dx+13[x4+10x29]dx\int_{-3}^{-1} [-x^4 + 10x^2 - 9] \, dx + \int_{1}^{3} [-x^4 + 10x^2 - 9] \, dx
  3. Calculate Integral: Calculate the integral.\newlineFor [x4+10x29]dx\int [-x^4 + 10x^2 - 9] \, dx:\newlineAntiderivative = (1/5)x5+(10/3)x39x(-1/5)x^5 + (10/3)x^3 - 9x\newlineEvaluate from 3-3 to 1-1 and from 11 to 33:\newline[(-1/5)(-1)^5 + (10/3)(-1)^3 - 9(-1)] - [(-1/5)(-3)^5 + (10/3)(-3)^3 - 9(-3)]\(\newline+ [(-1/5)(3)^5 + (10/3)(3)^3 - 9(3)] - [(-1/5)(1)^5 + (10/3)(1)^3 - 9(1)]\newline= [(-1/5) + (-10/3) + 9] - [(-243/5) - 30 - 27] + [(243/5) + 30 - 27] - [(-1/5) + (10/3) - 9]\newline= [(-1/5) - 10/3 + 9 + 243/5 + 30 + 27 - 243/5 - 30 + 27 + 1/5 - 10/3 + 9]\newline= [0 + 0 + 36]\newline= \$36\)

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