If a + b = 3 and ab = 2 then what is the value of 2a3 +2b3 ?
Answer & explanation
Correct answer: option 3
If a + b = 3
ab = 2
then what is the value of 2a3 +2b3
Put the values of a = 2 and b = 1
2a3 +2b3 = 2(2)3 +2(1)3
2a3 +2b3 = 16 + 2 = 18
If a + b = 3 and ab = 2 then what is the value of 2a3 +2b3 ?
Correct answer: option 3
If a + b = 3
ab = 2
then what is the value of 2a3 +2b3
Put the values of a = 2 and b = 1
2a3 +2b3 = 2(2)3 +2(1)3
2a3 +2b3 = 16 + 2 = 18