(a-3b)² - 36b²
factorise
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ʜᴇʟʟᴏ ᴍᴀᴛᴇ!
( ᴀ - 3ʙ )² - 36ʙ²
( ᴀ - 3ʙ )² - ( 6ʙ )²
ᴀ² - ʙ² = ( ᴀ + ʙ )( ᴀ - ʙ )
( ᴀ - 3ʙ + 6ʙ )( ᴀ - 3ʙ - 6ʙ )
( ᴀ + 3ʙ )( ᴀ - 9ʙ )
ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs
( ᴀ - 3ʙ )² - 36ʙ²
( ᴀ - 3ʙ )² - ( 6ʙ )²
ᴀ² - ʙ² = ( ᴀ + ʙ )( ᴀ - ʙ )
( ᴀ - 3ʙ + 6ʙ )( ᴀ - 3ʙ - 6ʙ )
( ᴀ + 3ʙ )( ᴀ - 9ʙ )
ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs
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Answered by
9
Given,
(a-3b)² - 36b²
→(a-3b)² - (6b)²
→(a - 3b + 6b) *(a-3b -6b)
→(a + 3b)*(a - 9b)
Identity used= a²-b² = (a+b)(a-b)
(a-3b)² - 36b²
→(a-3b)² - (6b)²
→(a - 3b + 6b) *(a-3b -6b)
→(a + 3b)*(a - 9b)
Identity used= a²-b² = (a+b)(a-b)
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