c5armestarrakosi c5armestarrakosi

08-06-2016
Mathematics

Answered

The product of a + 3 and –2a2 + 15a + 6 is –2a3 + xa2 + 51a + 18. What is the value of x?

A=3

B=9

C=12

D=15

Verified Answer :

vsanjuan256 vsanjuan256

08-06-2016

(A+3) x ( -2A2+15A+6) = (-2A3+XA2+51A+18)
(3+3) x ( -232+153+6) = (-233+X 32+513+18)
(6) x (-232=-12 + 153=45 +6 = 51
(6) x (-12 +51=39)
6 x 39 =( -233= -18)+ x 32+(513+18=171)
6 x 39 -18 + x32+ 171
6 x 39 =234
234 -171=63
-18 + 5x=63
X = 13.5

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