Com a formula de Bhaskara, resolva as seguintes equações:

a) - x² + 8 + 9 = 0

b) 2x² + 3x + 11 = 0

c) 25x² - 10x + 1 = 0

d) x² - 9x + 8 = 0

Com o calculo completo se possível, grata!

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