Is x= -1/2 is the zero of the polynomial 2x³+ax²-3x+2 what is the value of a solve... Please help me
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Answer:
a= -7
Step-by-step explanation:
2(-1/2)^3 + a(-1/2)^2 -3(-1/2)+2=0
2(-1/8) +a(1/4) - 3(-1/2) +2 =0
-1/4 + a/4 +3/2 +2 =0
-1/4 + a/4 + 6/4 + 8/4=0
-1+a+6+8=4
a+12=5
a=5-12
a= -7
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