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
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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