Question

if a + b is equal to 10 and a square + b square is equal to 58 then find the value of a cube plus b cube​

Answer 1

Answer:

a^3=27 b^3=343

Step-by-step explanation:

a+b=10

a^2+b^2=58

by trial and error method a=3 and b=7

3+7=10

3^2+7^2=9+49=58

3^3+7^3=27+343=370

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Answer 2

Answer:

Step-by-step explanation:

a+b=10

a2+b2=58

{a+b}2= a2+b2 + 2ab

100=58+2ab

2ab= 100-58=42

{a+b}3=a3+b3+2ab(a+b)

1000=a3+b3+2*42(10)

1000-840=a3+b3

a3+b3= 160