a+b=11 ,a 2 +b 2 =61 find a 3 +b 3
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Answered by
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(a+b)²= a²+b²+2(ab)
(11)² =61+ 2( ab)
121= 61+2(ab)
121 - 61= 2(ab)
60 = 2(ab)
30 = ab
now according to question,
(a+b)³= a³+ b³ +3ab(a+b)
(11)³= a³+ b³ + 3 ×30(11)
1221=a³+b³+ 990
1221 - 990= a³+ b³
231= a³+ b³
hope this helps plzz mark this as brainliest
(11)² =61+ 2( ab)
121= 61+2(ab)
121 - 61= 2(ab)
60 = 2(ab)
30 = ab
now according to question,
(a+b)³= a³+ b³ +3ab(a+b)
(11)³= a³+ b³ + 3 ×30(11)
1221=a³+b³+ 990
1221 - 990= a³+ b³
231= a³+ b³
hope this helps plzz mark this as brainliest
Wrong answer
Subtraction part is wrong
yes wrong answer
now I have rectified my answer
right answer is 341
yes
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