Resolva as equações a)2X^+7X + 3 = 0
b)-X^ + X + 2 = 0
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A) 2x^2+7x+3=0
:::::::::::::::::::::::::::;;;::::::::::::::::::::::::::::::: a=2 b=7 c = 3
Delta = 7^2-4.3.2
Delta = 25
x'=-7+5 / 4.......... x'= - 1/2
x''=-7-5 / 4..........x''= - 3
B)- x^2+x+2=0
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: a = -1 b = 1 c = 2
Delta=1+8
Delta=9
X'=-1+3 / -2...........x'=-1
X''=-1-3 / -2...........x''=1
:::::::::::::::::::::::::::;;;::::::::::::::::::::::::::::::: a=2 b=7 c = 3
Delta = 7^2-4.3.2
Delta = 25
x'=-7+5 / 4.......... x'= - 1/2
x''=-7-5 / 4..........x''= - 3
B)- x^2+x+2=0
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: a = -1 b = 1 c = 2
Delta=1+8
Delta=9
X'=-1+3 / -2...........x'=-1
X''=-1-3 / -2...........x''=1
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