Question

determine o valor da incógnita

1-b+3/b+2 = 4/5

2- y+2/y-5= 0/-7

Answer 1

Resposta:

3b+3/b=4/5

3-b+3/b-4/5=0

11/5-b+3/b=0

11b-5b×2+15=0

5b

11b-5bx2+15=0

-5bx2+11b+15=0

5bx2-11b-15=0

b=-(11)+/- raiz quadrada(11)x2-4×5×(15)

b=11+/- raiz quadrada 421

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b=11+raiz quadrada 421

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b=11- raiz quadrada 421

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b=11+raiz quadrada 421

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b=11- raiz quadrada 421

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b1=11-raiz quadrada 421,

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b2 11+raiz quadrada 421

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