Question

y^3-64 factorise help​

Answer 1

Answer:

The answer is:(y-4)(y²+4y+16)

Step-by-step explanation:

y³-64

Rewrite 64 as 4³

=> y³-4³

Since, Formula a³-b³=(a-b)(a²+ab+b²)

where a=y & b=4

=>(y-4)(y²+y*4+4²)

Therefore, the answer is:

=>(y-4)(y²+4y+16)

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Answer 2

Answer:

y³-64=0

y³=64

y=³√64

y=³√4³

y=4

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