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Use One of the Appropriate Patterns (a+b)2=a2+2ab+b2( a + b ) ^ { 2 } = a ^ { 2 } + 2 a b + b ^ { 2 }

Question 297

Multiple Choice

Use one of the appropriate patterns (a+b) 2=a2+2ab+b2( a + b ) ^ { 2 } = a ^ { 2 } + 2 a b + b ^ { 2 } ; (ab) 2=a22ab+b2( a - b ) ^ { 2 } = a ^ { 2 } - 2 a b + b ^ { 2 } ; (a+b) (ab) =a2b2( a + b ) ( a - b ) = a ^ { 2 } - b ^ { 2 } to find the following product. 9x(49x) (4+9x) - 9 x ( 4 - 9 x ) ( 4 + 9 x )


A) 36x+729x3- 36 x + 729 x ^ { 3 }
B) 144x+729x3- 144 x + 729 x ^ { 3 }
C) 144x729x2- 144 x - 729 x ^ { 2 }
D) 144x+81x3- 144 x + 81 x ^ { 3 }
E) none of these

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