9a2-243b2 factorise the following
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shivanisri123:
Your answer is wrong because the square of 9√3 is not 27, it is 243 as
9 × 9 ×√3×√3 = 81 ×3 = 243
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9( a2 - 27b2 )
9{ ( a)2 - ( 27b)2 }
9{(a+3√3b)(a-3√3b)}
So the answer is
9(a+3√3b)(a-3√3b)
9{ ( a)2 - ( 27b)2 }
9{(a+3√3b)(a-3√3b)}
So the answer is
9(a+3√3b)(a-3√3b)
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