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lisapivaral

  • 4 years ago

How do I multiply (5+x)(5+2x). Help is greatly needed

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  1. lilg132
    • 4 years ago
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    5 * 5 = 25 5 * 2x = 10x x * 5 = 5x x * 2x = 2x^2 so 2x^2 + 5x + 10x + 25 which is now 2x^2 + 15x + 25 remember to click good answer

  2. henkjan
    • 4 years ago
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    Use the parrot beak technique|dw:1323789751994:dw| the lines of the beak are the numbers you have to multiply: so 5*5 + x*5 + x*5 + x*2x

  3. ash2326
    • 4 years ago
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    multiply term by term (5+x)(5+2x) 5(5+2x)+x(5+2x) 25+10x+5x+2x^2 2x^2+15x+25

  4. lilg132
    • 4 years ago
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    |dw:1323789902300:dw|

  5. lilg132
    • 4 years ago
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    |dw:1323789917134:dw|

  6. lisapivaral
    • 4 years ago
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    Thanks friends I really needed the help.

  7. henkjan
    • 4 years ago
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    Haha :P ... I learned this technique from my math teacher when he was in a funny mood ;P

  8. lilg132
    • 4 years ago
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    your welcome

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