document.write( "Question 1040299: 1. Please help me to solve this? (2a - 3b) ( a + 12b)
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document.write( "2. Please help me to solve this? (-m + 6n ) ( -3m - 7n)
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document.write( "3. Please help me to solve this? (-4p - q) ( 2p + 9q)
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document.write( "4. Please help me to solve this? -3(h - 11) (5h - 5)
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document.write( "5. Please help me to solve this [( x + 3) + 2 ] [( x + 3) - 5]
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document.write( "Thank you in advance \n" );
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Algebra.Com's Answer #655121 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! multiply each term in the first by each term in the second. There are four terms. \n" ); document.write( "For the first, it would be 2a*2+2a(12b)-3b(a)-3b(12b)=2a^2-3ab+24ab-36b^2 \n" ); document.write( "That is 2a^2+21ab-36b^2. Remember, ab and ba are the same. \n" ); document.write( "---------------- \n" ); document.write( "The second is 3m^2-11mn-42n^2. \n" ); document.write( "(-m+6n)(-3m-7n)=(-m)(-3m)+(-m)(-7n)+(6n)(-3m)+(6n)(-7n)=3m^2+7mn-18mn-42n^2. There are four terms from a 2 x 2 binomial. Each term in the first is multiplied by each term in the second. There will be a m^2 and n^2 and two mn terms. The others are done the same way. \n" ); document.write( "--------------- \n" ); document.write( "The third is -8p^2-38pq-9q^2 \n" ); document.write( "--------------- \n" ); document.write( "The fourth is done by putting the -3 in last. (5h^2-60h+55), so it becomes -15h^2+180h-165 \n" ); document.write( "-------------- \n" ); document.write( "The fifth is (x+5)(x-2), because the parentheses don't change anything when there is addition. We can add in any order we choose. \n" ); document.write( "That is foiled out to x^2+3x-10. \n" ); document.write( "The long way is (x+3)^2-5(x+3)+2(x=3)-10 \n" ); document.write( "That is (x+3)^2-3(x+3)-10 \n" ); document.write( "That is x^2+6x+9-3x-9-10 \n" ); document.write( "That is x^2+3x-10 \n" ); document.write( " |