If x – y = 5 and xy = 84 Find the value of x3– y3
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Answer:
ʜᴇʀᴇ ɪs ᴜʀ ᴀɴsᴡᴇʀ!!
Step-by-step explanation:
x-ʏ = 5
ᴄᴜʙɪɴɢ ʙᴏᴛʜ sɪᴅᴇs
(x-ʏ)3 = (5)3
(х3 - ʏ3 - 3хʏ) = 125
(х3 - ʏ3 - 3×84) = 125
(х3 - ʏ3 - 252) = 125
(х3 - ʏ3) = 125 + 252
(х3 - ʏ3) = 377
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