Differentiate: y=√6x³+4x²
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Answer:
4x^2 (x - 1) - 6x^3 (x^2 - 1)
= 4x^2 (x - 1) - 6x^3 (x + 1)(x - 1)
= (x - 1)(4x^2 - 6x^3 (x + 1))
= -2x^2 (x - 1)(-2 + 3x(x + 1))
= 2x^2 (x - 1)(3x^2 + 3x - 2)
Solve for the roots of 3x^2 + 3x - 2 = 0
Using the quadratic formula,
x = ((-3) +/- sqrt (9 - 4*3 (-2)))/(2 * 3)
x = ((-3) +/- sqrt (33))/6
3x^2 + 3x - 2 = (x - (-3 + sqrt 33)/6)(x -(-3 - sqrt 33)/6)
= (x + (3 - sqrt 33)/6)(x - (3 + sqrt 33)/6)
2x^2 (x - 1)(3x^2 + 3x - 2)
= 2x^2 (x - 1)(x + (3 - sqrt 33)/6)(x - (3 + sqrt 33)/6)
Hope it was helpful
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