Question

identifique os coeficientes
a) -5X²+x-1=0
b) x²-16=0
c) 7y²+10y+3=0
d) -2x²+3x+1=0​

Answer 1

Explicação passo-a-passo:

a) -5x² + x - 1 = 0

-> ax² + bx + c = 0

• a = -5

• b = 1

• c = -1

b) x² - 16 = 0

-> ax² + bx + c = 0

• a = 1

• b = 0

• c = -16

c) 7y² + 10y + 3 = 0

-> ay² + by + c = 0

• a = 7

• b = 10

• c = 3

d) -2x² + 3x + 1 = 0

-> ax² + bx + c = 0

• a = -2

• b = 3

• c = 1

Answer 2

Oie, Td Bom?!

• Equação do 2° grau completa na forma:

$ax {}^{2} + bx + c = 0 \: ,\: a≠0$

a)

$- 5x {}^{2} + x - 1 = 0$

$a = - 5 \: ,\: b = 1 \: , \: c = - 1$

b)

$x {}^{2} - 16 = 0$

$a = 1 \: , \: b = 0 \: ,\: c = - 16$

c)

$7y {}^{2} + 10y + 3 = 0$

$a = 7 \: , \: b = 10 \: ,\: c = 3$

d)

$- 2x {}^{2} + 3x + 1 = 0$

$a = - 2 \: ,\: b = 3 \: ,\: c = 1$

Att. Makaveli1996