Question

fatore e resolva as equações a seguir
a) 4x^2-1=0
b) x^2-7x+10=0

Answer 1

4x^2 - 1 = 0

a) 4x^2 = 1
x^2 = 1/4 raiz quadrada

x = +- 1/2

S={ +- 1/2}

b) x^2 - 7x + 10
▲ = b^2 - 4. a.c
▲ = 7^2 - 4 .1.10
▲ = 49 - 40
▲= 9

x1= + 7 + 3 = 10/2 = 5
2

x2 = + 7 - 3 4/2 = 2
2
S= 5,2

Answer 2

Ola Camila

4x² - 1 = (2x + 1)*(2x - 1)

x² - 7x + 10 = 0
(x - 2)*/x - 5) = 0

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