2-3b+c ^2 fast exams
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Hi ,
I think it may be like this ,
( 2 - 3b + c )²
= [ 2 + ( -3b)² + c ]²
= 2²+(-3b)²+c²+ 2 × 2 ( -3b )+2×(-3b)c+2c×2
= 4 + 9b² + c² - 12b - 6bc + 4c
I hope this helps you.
: )
I think it may be like this ,
( 2 - 3b + c )²
= [ 2 + ( -3b)² + c ]²
= 2²+(-3b)²+c²+ 2 × 2 ( -3b )+2×(-3b)c+2c×2
= 4 + 9b² + c² - 12b - 6bc + 4c
I hope this helps you.
: )
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