If x + y = 8 and xy = 15, find x3 + y3 .
Answers
Answered by
1
Answer:x 2 +y 2 =(x+y) 2 −2xy=64−2×15=34
Answered by
0
Answer:
152
Step-by-step explanation:
(x+y)^3-3xy(x+y)= x^3+y^3
8^3-3*15*8
= 512-45*8
=152
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