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Alekssandra [29.7K]
3 years ago
9

Pls help only if yk it ill give brainliest to the correct answer !

Mathematics
1 answer:
IgorC [24]3 years ago
6 0

Answer:

x=-0.3

x=-11.7

Step-by-step explanation:

4x^2+24x+13=2x^2+6\\\mathrm{Subtract\:}6\mathrm{\:from\:both\:sides}\\4x^2+24x+13-6=2x^2+6-6\\Simplify\\4x^2+24x+7=2x^2\\\mathrm{Subtract\:}2x^2\mathrm{\:from\:both\:sides}\\4x^2+24x+7-2x^2=2x^2-2x^2\\Simplify\\2x^2+24x+7=0\\\mathrm{Solve\:with\:the\:quadratic\:formula}\\Quadratic\:Equation\:Formula\\\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

\mathrm{For\:}\quad a=2,\:b=24,\:c=7:\quad x_{1,\:2}=\frac{-24\pm \sqrt{24^2-4\cdot \:2\cdot \:7}}{2\cdot \:2}\\x=\frac{-24+\sqrt{24^2-4\cdot \:2\cdot \:7}}{2\cdot \:2}:\quad \frac{-12+\sqrt{130}}{2}\\x=\frac{-24-\sqrt{24^2-4\cdot \:2\cdot \:7}}{2\cdot \:2}:\quad -\frac{12+\sqrt{130}}{2}\\The\:solutions\:to\:the\:quadratic\:equation\:are:\\x=\frac{-12+\sqrt{130}}{2},\:x=-\frac{12+\sqrt{130}}{2}\\\\quad x=-0.29912\ ,\:x=-11.70087

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↪Hola user_____________

⭐Here is Your Answer...!!!

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↪SURFACE AREAS AND VOLUMES

↪The VOLUME of any object is nothing but the the capacity to hold the amount of substance inside it . It defines the Amount of substance that can occupied bythe object inside it ..

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↪thus for the Cylinder ; Volume of cylinder = Pi(R^2) × H

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↪thus here given as R = 4 cm and H = 12cm

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Solve by completing the square x^2+6x+13=0
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Answer:

x = -3 + 2 i or x = -3 - 2 i

Step-by-step explanation:

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x^2 + 6 x = -13

Hint: | Take one half of the coefficient of x and square it, then add it to both sides.

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x^2 + 6 x + 9 = -4

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Hint: | Look at the second equation: Solve for x.

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