anonymous
  • anonymous
will medal question below
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
|dw:1434291285071:dw|
anonymous
  • anonymous
@butterflydreamer
butterflydreamer
  • butterflydreamer
is the last number a 7 or a 1?

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More answers

anonymous
  • anonymous
7
CGGURUMANJUNATH
  • CGGURUMANJUNATH
|dw:1434290279530:dw|
CGGURUMANJUNATH
  • CGGURUMANJUNATH
|dw:1434290331067:dw|
CGGURUMANJUNATH
  • CGGURUMANJUNATH
|dw:1434290365941:dw|
butterflydreamer
  • butterflydreamer
okay :) You have to use the quadratic formula for this: |dw:1434291441022:dw| From your equation, can you tell me what's a, b and c? Then plug it into the formula :)!
butterflydreamer
  • butterflydreamer
oops i was too slow LOL
anonymous
  • anonymous
a=2 b=-3 c=-7
CGGURUMANJUNATH
  • CGGURUMANJUNATH
|dw:1434290411013:dw|
CGGURUMANJUNATH
  • CGGURUMANJUNATH
|dw:1434290471648:dw|
anonymous
  • anonymous
in the formula why is b squared 3 and not -3 @butterflydreamer
butterflydreamer
  • butterflydreamer
b squared? We know b = -3, so b^2 = -3 * -3 = 9 (multiplying two negatives make a positive)
anonymous
  • anonymous
sorry i meant b
anonymous
  • anonymous
|dw:1434291775453:dw|
anonymous
  • anonymous
i thought that would be -3 ?
butterflydreamer
  • butterflydreamer
ohhhh! okay :) Looking at our formula we have: |dw:1434291773407:dw|
anonymous
  • anonymous
im talking about the b squared in the formula @butterflydreamer
anonymous
  • anonymous
it should be -3 cos b is -3
butterflydreamer
  • butterflydreamer
are you talking about in @CGGURUMANJUNATH 's working? |dw:1434291913118:dw|
anonymous
  • anonymous
yes
CGGURUMANJUNATH
  • CGGURUMANJUNATH
|dw:1434290833150:dw|
butterflydreamer
  • butterflydreamer
oh yeah, it should be (-3)^2 :) But -3 squared and 3 squared both give you 9... just a typo probably
CGGURUMANJUNATH
  • CGGURUMANJUNATH
|dw:1434290844945:dw|
CGGURUMANJUNATH
  • CGGURUMANJUNATH
|dw:1434290878100:dw|
CGGURUMANJUNATH
  • CGGURUMANJUNATH
|dw:1434290905645:dw|
anonymous
  • anonymous
ok
anonymous
  • anonymous
|dw:1434292314596:dw|
anonymous
  • anonymous
@butterflydreamer
butterflydreamer
  • butterflydreamer
remember that the entire this is divided by 4 so we actually have: |dw:1434292371847:dw|
anonymous
  • anonymous
x=-1.3 to 1 dp or x=2.8
CGGURUMANJUNATH
  • CGGURUMANJUNATH
|dw:1434291344388:dw||dw:1434291383387:dw|
butterflydreamer
  • butterflydreamer
that's corrreect :)!
anonymous
  • anonymous
thanks both @butterflydreamer and @CGGURUMANJUNATH
butterflydreamer
  • butterflydreamer
you're welcome :))!
CGGURUMANJUNATH
  • CGGURUMANJUNATH
|dw:1434291441704:dw|

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