simplify this sum =(3x + y)².
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Answer:
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Step-by-step explanation:
We know that,
(a+b)² = a²+b²+2ab
Hence, (3x+y)²
= (3x)²+y²+2×3x×y
= 9x²++y²+6xy
ʜᴇʀᴇ'ꜱ yᴏᴜʀ ᴀɴꜱᴡᴇʀ
ꜱɪᴍᴩʟɪꜰy → (3x +y)²
ʟᴇᴛ'ꜱ ᴜꜱᴇ ᴛʜᴇ ɪᴅᴇɴᴛɪᴛɪᴇꜱ ʜᴇʀᴇ:
✎ (a + b)² → a² + 2ab + b²
ꜱɪᴍɪʟᴀʀʟy,
✎ (3x +y)² → 3x² + 2 (3x + y) + y²
ʟᴇᴛ'ꜱ ꜱɪᴍᴩʟɪꜰy
✎ 3x² + 2 (3x + y) + y²
9x² + 6xy + y²
HOPE THIS HELPS ✌