happykiddo
  • happykiddo
Could someone please tell me what are two numbers that multiply to -140 and add together to 4?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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precal
  • precal
|dw:1364524020116:dw|are you sure it is not subtract to make 140
precal
  • precal
|dw:1364524067794:dw|is it like this?
happykiddo
  • happykiddo
yes its x^2+4x-140

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anonymous
  • anonymous
the numbers have to be really close to one another
precal
  • precal
always list your factors don't worry about the signs
precal
  • precal
|dw:1364524588051:dw|x times x gives you x^2
anonymous
  • anonymous
14 and -10
anonymous
  • anonymous
(x - 10)(x + 14) a + b = 4 14 - 10 = 4 a x b = -140 (14)(-10) = - 140 14 and - 10
precal
  • precal
|dw:1364524606341:dw|
precal
  • precal
the sign in front of 140 is negative and that tells you to subtract your factors
precal
  • precal
|dw:1364524645117:dw|
happykiddo
  • happykiddo
geez its -10 and 14 How did i miss that. Thanks to all that helped
precal
  • precal
|dw:1364524677588:dw|
precal
  • precal
to have a negative your sign choices are (-)(+) +14-10 or -14+10
precal
  • precal
we need +4 so we must use +14-10=+4
precal
  • precal
|dw:1364524736862:dw|signs give us the middle term

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