if 3 is a zero of a polynomial p (x) =2x² -3x + 7a . find the value of a
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Answer:
2× 3 ×3 - 3×3 + 7a = 0
18 - 9 + 7a = 0
9 + 7a = 0
7a = -9
a = -9/7
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1
p(3)=0
2(3)² _3×3 +7a =0
9 + 7a =0
7a = _9
a = _9/7 ............
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