Math, asked by ShauryaBayond, 11 months ago

^{3}ifa+b=8andab=6findthevalueofa3+b3
please solve it​

Answers

Answered by MayurKodange
0

Answer:

Step-by-step explanation:

a + b = 6

⇒ (a + b)3 = (6)3

⇒ a3 + b3 +3ab (a+b) = 216

⇒ a3 + b3 + 3 × 8 (6) = 216

⇒ a3 + b3 + 144 = 216

⇒ a3 + b3 = 216 – 144

⇒ a3 + b3 = 72

Alternative Method

(a + b)3 = a3 + b3 + 3ab (a + b)

⇒ (6)3 = a3 + b3 + 3 × 8 (6)

⇒ 216 = a3 + b3 + 144

⇒ 216 -144 = a3 + b3

⇒ 72 = a3 + b3

⇒ a3 + b3 = 72

Answered by Anonymous
0

Step-by-step explanation:

please refer to attachment...

Attachments:
Similar questions