find the value of the polynomial
2x³– 3x² + 8x+7 when i)x=2
ii)x=3
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Answer:
f(x)= 4x⁴+2x³-3x²+8x+5a
since x+2 is a factor of f(x)
then f(-2) = 0
4(-2)⁴+2(-2)³ -3(-2)² +8(-2)+5a = 0
64-16-12-16+5a = 0
64-44+5a = 0
20+5a = 0
5a = -20
a = -20/5 = -4
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Step-by-step explanation:
See the above solution
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