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avatar+19 

Find the constant \(a\) such that

 

\((x^2 - 3x + 4)(2x^2 +ax + 7) = 2x^4 -11x^3 +30x^2 -41x +28\)

 Aug 31, 2021
 #1
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0

Expanding, we get that the coefficient of a is -3a + 28 = -41, so a = 23.

 Aug 31, 2021
 #2
avatar+19 
+1

ahh tht answer is wrong thanks for ur help thoguh!

uttoki  Aug 31, 2021
 #3
avatar+114464 
+2

4ax - 21x = -41x

(4a-21) x = - 41 x

4a - 21 = -41

4a = -20

a = -5 

 Aug 31, 2021

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