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angiecannon
angiecannon angiecannon
  • 27-02-2017
  • Mathematics
Answered

Can someone plz help me w this

Can someone plz help me w this class=

Verified Answer :

Anonymous Anonymous
  • 27-02-2017

(3x - 1)(3 -x)+x^2 + 19

a)
(3x - 1)(3 -x)+x^2 + 19
=9x - 3x^2 - 3 + x + x^2 + 19
= -2x^2 + 10x + 16

b) evaluate at x = 2

-2x^2 + 10x + 16
= -2 (2^2) + 10(2) + 16
= -8 + 20 + 16
= 28

c) 
from part (a) 
-2x^2 + 10x + 16

= -2 (x^2 - 5x - 8) (complete factor)

Answer Link
batkittylover12
batkittylover12 batkittylover12
  • 27-02-2017

4x2 is 16x
(3x-1, 3-x : 2x+2)
18x+11

Answer Link

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