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CBSE Class 8 Answered

When 2x^2-ax+7 and ax^2+7x+12 are divided by  (x-3) and  (x+1) respectively, the remainder is the same. What is the value of the a?
Asked by shravanchakankar | 22 Jan, 2019, 05:38: PM
answered-by-expert Expert Answer
f(x) = 2x2 -ax + 7                        g(x) = ax2 + 7x + 12

f(3) = (2×9)-3a+7 = 25-3a          g(-1) = a-7+12  = a+5
 
25 -3a = a +5  or  4a = 20  or a = 5
Answered by Thiyagarajan K | 22 Jan, 2019, 09:45: PM
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