Question

1. Factorise. (1) x + 64y3 what is perfect method of this equation
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Answer 1

Answer:

cube root is. the method to find this answer

Answer 2

It is known that,

a3+b3=(a+b)(a2+b2−ab)a3+b3=a+ba2+b2-ab

(1) x3+64y3=(x)3+(4y)3=(x+4y){(x)2+(4y)2−(x)×(4y)}=(x+4y)(x2+16y2−4xy)1 x3+64y3=x3+4y3=x+4yx2+4y2-x×4y=x+4yx2+16y2-4xy

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