document.write( "Question 372084: Please help me solve these problems
\n" ); document.write( "FIND THE PRODUCT (6x-7)^2
\n" ); document.write( "FIND THE PRODUCT (8x-3z)(8x+3z)
\n" ); document.write( "USING THE FORMULA (a+b)(a-b)=a^2-b^2 to multiply (9x-7)(9x+7) \n" ); document.write( "

Algebra.Com's Answer #265055 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "FIND THE PRODUCT (6x-7)^2  
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document.write( "(6x-7)(6x-7)= 36x^2-84x + 49 (sum of inner product(-42x) and outer product(-42x)=-84x\r
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document.write( "FIND THE PRODUCT 
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document.write( "(8x-3z)(8x+3z)= 64x^2 -9z^2 (sum of inner product(-24x) and outer product(24x) = 0
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document.write( "USING THE FORMULA (a+b)(a-b)=a^2-b^2 to multiply 
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document.write( "(9x-7)(9x+7) = 81x^2 - 49 (sum of inner product(-63x) and outer product(63x) = 0\r
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document.write( "Note: If using the outer and inner products for the x term is too confusing,
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document.write( "we can alwyas resort to the 'long way'  
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document.write( "(6x-7)(6x-7)= 6x(6x-7)-7(6x-7) = 36x^2 -42x -42x + 49 = 36x^2 -84x -49 \n" );
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