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Mathematics 22 Online
OpenStudy (anonymous):

What is 64x^3-1=0

OpenStudy (therealmeeeee):

Use the Difference of Cubes equation, that is (a^3-b^3) = (a-b)(a^2+ab+b^2) with a = 4x and b = 1 So: (64x^3 - 1) = (4x - 1)(16x^2 + 4x + 1) = 0 So x = 1/4, (1/8)(-1 +/- i*sqrt(3))

OpenStudy (therealmeeeee):

do u get it

OpenStudy (therealmeeeee):

64x3+1=0 2. Use sum of cubes formula: a3+b3=(a+b)(a2−ab+b2) 3. (4x)3+(1)3 a=4x and b=1, 4.apply formula =(4x+1)(16x2−4x+1)

OpenStudy (therealmeeeee):

@Bud575

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