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CBSE Class 8 Answered

 What will be the value of a, if y + 2 is a factor of Error converting from MathML to accessible text.
Asked by Crazykittu2005 | 20 Mar, 2019, 11:07: AM
answered-by-expert Expert Answer
f(y) = 4 y4 + 2 y3 -3 y2 +8 y +5 a
 
if (y+2) is a factor of f(y) , then f(-2) = 0
 
f(-2) = 4 (-2)4 + 2 (-2)3  -3(-2)2 +8(-2) + 5 a = 5 a + 20 = 0
 
hence a = - 4
Answered by Thiyagarajan K | 20 Mar, 2019, 12:40: PM
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