if (x-3)is a factor of the polynomial (2x^2 + x+k) find k ..
In this ques why we put the value of x is 3 we can put value of x 4 also
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• When we put value of x we get zero as resultant coz it is factor of that polynomial that means it is Zeros of that polynomial.
• x - 3 when divide polynomial it give 0 as remainder.
• x = 3 is the same .
• 2x² + x + k
2 ( 3 )² + 3 + k = 0
2 × 9 + 3 + k = 0
18 + 3 + k = 0
k = - 21
• If we put 4 at the place of x we never get 0 as resultant.
• x - 3 when divide polynomial it give 0 as remainder.
• x = 3 is the same .
• 2x² + x + k
2 ( 3 )² + 3 + k = 0
2 × 9 + 3 + k = 0
18 + 3 + k = 0
k = - 21
• If we put 4 at the place of x we never get 0 as resultant.
Palaktaneja:
I am confused resultant means??
remainder
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3
hey buddy here is your answer
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