Factor the polynomial: 64x^3 + 343
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Originally Posted by magentarita Factor the polynomial: 64x^3 + 343 Set it equal to zero and find the roots, that will give you a factor! Hence is a factor. Use long division to find such that You should get The quadratic in this equation is irreducible.
Originally Posted by magentarita Factor the polynomial: 64x^3 + 343 You have (4x)^3 + 7^3. Now use the sum of cubes formula for factorising: Sum of Cubes Note that the quadratic factor in this formula cannot be further factorised.
Originally Posted by mr fantastic You have (4x)^3 + 7^3. Now use the sum of cubes formula for factorising: Sum of Cubes Note that the quadratic factor in this formula cannot be further factorised. I can take it from here.
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