anonymous
  • anonymous
please help!!!when the expression 4x^2-3x-8 is divided by x-a the remainder is 2. Find the value of a
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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.Sam.
  • .Sam.
Easy, p(x)=4x^2-3x-8 when x-a is a factor of p(x), then p(a) is equal to 2, so p(a)=4a^2-3a-8=2 Solve for 4a^2-3a-8=2
anonymous
  • anonymous
what do you mean by solve for 4a^2-3a-8=2?
anonymous
  • anonymous
???

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anonymous
  • anonymous
someone help!
austinL
  • austinL
\(\large{4a^2-3a-8=2}\) Solve for a.
anonymous
  • anonymous
???
.Sam.
  • .Sam.
Solve for 'a', Like this 4a^2-3a-8=2 subtract 2 to both sides 4a^2-3a-10=0 Then factor it
anonymous
  • anonymous
sorry,, my browser crashed,,
anonymous
  • anonymous
(-5 + -4a)(2 + -1a) = 0
anonymous
  • anonymous
next???
anonymous
  • anonymous
(4a-5)(a+2)
anonymous
  • anonymous
what's next??
anonymous
  • anonymous
get the roots??
.Sam.
  • .Sam.
Careful, its not (4a-5)(a+2)
anonymous
  • anonymous
sorry,,
anonymous
  • anonymous
xDD,,Careful, its not (4a+5)(a-2)
.Sam.
  • .Sam.
Okay then (4a+5)(a-2)=0 a=-5/4 and a=2 done
anonymous
  • anonymous
ahha.,xDD sorry,, just copy pasted.. xDD
anonymous
  • anonymous
thanks,, so much.,

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