Question

If a-b =5 and ab = -4 , then find the value of a^3-b^3. ​

Answer 1

Step-by-step explanation:

a-b=5

a=5+b

now,

a^3-b^3

(5+b)^3-(b)^3

125+b^3-b^3

then,

+b^3 and -b^3 get cancelled

=125

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