Question

só a letra B, nem precisa da A// precisando até amanhã amgs ​

Answer 1

a)

11x^2 - 3x = x 10 5 2

11x^2 - 6x = 5x 11x^2 - 6x - 5x = 0 11x^2 - 11x = 0 (:11) x(x - 1) = 0 x2 - 1 = 0 x2 = 1

x^2 - x = 0

x1 = 0

mmc = 10

b) 3/(x-5)+1/(x+5)=(10-x²/x²-25),U=IR-{5,5}

3 + 1 = 10 - x^2 mmc ==> x-5 X+5 ==>

x^2-25

X-5 x+5

x^2-25

3(x+5) +1(x-5) = 10 - x^2 3x + 15 + x - 5 - 10 + x^2 = 0

x^2 + 4x = 0

x(x + 4) = 0 x1 = 0

x2 + 4 =0

x2 = - 4